Network Working Group S. K. Das Internet-Draft Independent Researcher Intended status: Informational 30 October 2026 Expires: 3 May 2027 AI Safety for Telecommunications Session, Resource, Usage, and Charging State Consistency draft-das-ai-safety-telecom-session-lifecycle-00 Abstract Part 04 of 15 describes Group C mechanisms for evidence-qualified reconstruction of subscriber trust, telecommunications session identity, home and visited operator state, programmable quality-of- service operation, resource reservation and installation, user-plane metering, charging, accounting, and deferred settlement. It distinguishes an accepted API request from an installed network resource, a subscriber trust change from session release, a usage report from a financial obligation, and a local release from complete session closure. It includes C-CW-01, six specialist embodiments, formal mathematics, flowcharts, and source-linked technical checkpoints. Part 01 supplies common evidence and consistency semantics, while Parts 02, 03, 07, 11, 12, 14, and 15 cover complementary radio observations, incident repair, asynchronous processing, continuity, commerce, and protected operation boundaries. Positive observation consistency does not itself authorize consequential network actuation. The technical gap arises when individually valid subscriber, roaming, service, metering and charging records cannot be shown to apply to the same operation, generation, time and verified outcome. This document specifies a source-qualified lifecycle graph with typed non- equivalent states, scoped three-valued evidence decisions, late- record correction, separate authority and effect-observation boundaries, practical implementation profiles, and failure/edge cases. Nine source-derived RFCXML diagrams are explained in the body. A standard-library Python reference and 87 synthetic tests illustrate selected in-memory algorithms; measured evaluator timings are not network latency, not peer reviewed and not field validation. Part 01 supplies shared evidence semantics; Parts 02, 03, 05, 07, 11, 12, 14 and 15 address complementary inputs, failures and consequential effects. Status of This Memo This Internet-Draft is submitted in full conformance with the provisions of BCP 78 and BCP 79. Das Expires 3 May 2027 [Page 1] Internet-Draft Telecom Session Operational Consistency October 2026 Internet-Drafts are working documents of the Internet Engineering Task Force (IETF). Note that other groups may also distribute working documents as Internet-Drafts. The list of current Internet- Drafts is at https://datatracker.ietf.org/drafts/current/. Internet-Drafts are draft documents valid for a maximum of six months and may be updated, replaced, or obsoleted by other documents at any time. It is inappropriate to use Internet-Drafts as reference material or to cite them other than as "work in progress." This Internet-Draft will expire on 3 May 2027. Copyright Notice Copyright (c) 2026 IETF Trust and the persons identified as the document authors. All rights reserved. This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents (https://trustee.ietf.org/ license-info) in effect on the date of publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect to this document. Code Components extracted from this document must include Revised BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Revised BSD License. Table of Contents 1. Scope, Technical Distinctions, and Reader Guidance . . . . . 59 2. Implementable Group C Architecture and State Contracts . . . 59 2.1. Operation and Entity Identity . . . . . . . . . . . . . . 59 2.2. Trust, Session, and Operator Contexts . . . . . . . . . . 59 2.3. Programmable Service and Installed Resource State . . . . 60 2.4. Usage, Charging, and Settlement . . . . . . . . . . . . . 60 2.5. Uncertainty and Outcomes . . . . . . . . . . . . . . . . 60 2.6. Security and Independent Control . . . . . . . . . . . . 60 3. Conventional Solutions, Technical Problem Space, and Why Additional Correspondence Checks Matter . . . . . . . . . 60 3.1. 1. Trust notification is not global session teardown . . 60 3.2. 2. Local serving-context release is not global session release . . . . . . . . . . . . . . . . . . . . . . . . 61 3.3. 3. Remote operator observations are not an atomic snapshot . . . . . . . . . . . . . . . . . . . . . . . . 61 3.4. 4. API acceptance is not installed resource state . . . 61 3.5. 5. Concurrent extension and deletion can race . . . . . 62 3.6. 6. Counters are not automatically additive . . . . . . . 62 3.7. 7. A recorded charge is not a settled financial obligation . . . . . . . . . . . . . . . . . . . . . . . 62 Das Expires 3 May 2027 [Page 2] Internet-Draft Telecom Session Operational Consistency October 2026 3.8. 8. Consent revisions do not rewrite history . . . . . . 63 3.9. 9. Operator outage leaves deferred duties . . . . . . . 63 3.10. 10. Duplicate API calls are not proven idempotent . . . 63 3.11. 11. An observed service target does not prove causal attribution . . . . . . . . . . . . . . . . . . . . . . 63 3.12. 12. Syntactically valid event data is not necessarily applicable evidence . . . . . . . . . . . . . . . . . . 64 4. Implementable Source-Qualified Lifecycle Architecture and Distinct Guarantees . . . . . . . . . . . . . . . . . . . 64 4.1. Minimum input interface . . . . . . . . . . . . . . . . . 64 4.2. Identity and event continuity . . . . . . . . . . . . . . 64 4.3. Three-valued evidence aggregation . . . . . . . . . . . . 64 4.4. Typed state and artifact interfaces . . . . . . . . . . . 65 4.5. Asynchronous reconciliation . . . . . . . . . . . . . . . 65 4.6. Authority boundary . . . . . . . . . . . . . . . . . . . 65 5. Group C Unabridged Technical Specification: C-CW-01 and Embodiments 1.C through 6.C . . . . . . . . . . . . . . . 65 5.1. INVENTION GROUP C - PROGRAMMABLE TELECOMMUNICATIONS SESSION LIFECYCLE AND CROSS-OPERATOR OPERATIONAL-STATE CONSISTENCY . . . . . . . . . . . . . . . . . . . . . . 65 5.2. COMMON WORKFLOW C-CW-01 . . . . . . . . . . . . . . . . . 65 5.3. 7.C.1. General Technical Subject . . . . . . . . . . . . 66 5.4. 7.C.2. Relationship to the Other Invention Groups . . . 67 5.5. 7.C.2.1. Boundary with Group A . . . . . . . . . . . . . 68 5.6. 7.C.2.2. Boundary with Group B . . . . . . . . . . . . . 68 5.7. 7.C.2.3. Boundary with Earlier Execution-Finality Disclosures . . . . . . . . . . . . . . . . . . . . . . 68 5.8. 7.C.3. Particular Technical Problem Space . . . . . . . 69 5.9. 7.C.3.2. Different Functions May Observe the Same Transition at Different Times . . . . . . . . . . . . . 69 5.10. 7.C.3.3. A Requested Modification Is Not an Applied Resource Change . . . . . . . . . . . . . . . . . . . . 69 5.11. 7.C.3.5. SIM-Related Events May Not Identify a Single Session Transition . . . . . . . . . . . . . . . . . . 70 5.12. 7.C.3.6. Roaming May Change the Applicable Operational Context . . . . . . . . . . . . . . . . . . . . . . . . 70 5.13. 7.C.3.7. Operator Handoffs May Be Partially Visible . . 71 5.14. 7.C.3.8. Concurrent API Requests May Affect Shared Resource or Usage State . . . . . . . . . . . . . . . . 71 5.15. 7.C.3.9. Quota Reservation and Actual Consumption May Differ . . . . . . . . . . . . . . . . . . . . . . . . 71 5.16. 7.C.3.10. Service Effects and Charging Records May Have Different Timing . . . . . . . . . . . . . . . . . . . 72 5.17. 7.C.3.11. Usage Reports May Be Duplicated or Incomplete . . . . . . . . . . . . . . . . . . . . . . 72 5.18. 7.C.3.12. Consent Withdrawal May Occur During an Active Session . . . . . . . . . . . . . . . . . . . . . . . . 72 Das Expires 3 May 2027 [Page 3] Internet-Draft Telecom Session Operational Consistency October 2026 5.19. 7.C.3.13. A Session May Have Multiple Simultaneous Lifecycle Dimensions . . . . . . . . . . . . . . . . . 73 5.20. 7.C.3.14. Session Termination May Not Complete Cleanup . . . . . . . . . . . . . . . . . . . . . . . . 73 5.21. 7.C.3.15. Remote Failure May Conceal Applied Changes . . 73 5.22. 7.C.3.16. Cross-Operator State Versions May Be Incomparable . . . . . . . . . . . . . . . . . . . . . 74 5.23. 7.C.3.17. Resource Reallocation May Leave Accounting State Unchanged . . . . . . . . . . . . . . . . . . . . . . . 74 5.24. 7.C.3.18. Session Continuity May Be Preserved Despite a Change in Serving Infrastructure . . . . . . . . . . . 74 5.25. 7.C.3.19. A Session May Terminate During an Interoperator Failure . . . . . . . . . . . . . . . . . . . . . . . . 74 5.26. 7.C.3.20. Final Accounting May Require More Evidence Than Final Resource Release . . . . . . . . . . . . . . . . 75 5.27. 7.C.3.21. External APIs May Expose a Simplified Session View . . . . . . . . . . . . . . . . . . . . . . . . . 75 5.28. 7.C.3.22. Session Lifecycle Decisions Must Be Reconstructible . . . . . . . . . . . . . . . . . . . . 75 5.29. 7.C.4. Common Technical Processing Relationship . . . . 75 5.30. 7.C.5. Representative System Components . . . . . . . . 76 5.31. 7.C.5.1. Session Identity Resolver . . . . . . . . . . . 76 5.32. 7.C.5.2. Subscriber-State Context Interface . . . . . . 77 5.33. 7.C.5.3. Session State Repository . . . . . . . . . . . 77 5.34. 7.C.5.4. Operator Context Resolver . . . . . . . . . . . 77 5.35. 7.C.5.5. Service Condition Evaluator . . . . . . . . . . 77 5.36. 7.C.5.6. Network Resource Correspondence Interface . . . 77 5.37. 7.C.5.7. Lifecycle Transition Evaluator . . . . . . . . 78 5.38. 7.C.5.8. Asynchronous Operation State Tracker . . . . . 78 5.39. 7.C.5.9. Cross-Operator Correspondence Service . . . . . 78 5.40. 7.C.5.10. Usage and Accounting Reconciler . . . . . . . 78 5.41. 7.C.5.11. Resource Release Reconciler . . . . . . . . . 78 5.42. 7.C.5.12. Session Continuity and Recovery Interface . . 78 5.43. 7.C.5.13. Lifecycle Evidence Repository . . . . . . . . 79 5.44. 7.C.5.14. Optional Existing Protected Enforcement Interface . . . . . . . . . . . . . . . . . . . . . . . 79 5.45. 7.C.6. Necessary Local Definitions . . . . . . . . . . . 79 5.46. 7.C.6.1. Session-Lifecycle Correspondence . . . . . . . 79 5.47. 7.C.6.2. Governing-Condition Revision . . . . . . . . . 79 5.48. 7.C.6.3. Session-State Reconstruction . . . . . . . . . 80 5.49. 7.C.6.4. Lifecycle Transition Correspondence . . . . . . 80 5.50. 7.C.6.5. Session Resource Correspondence . . . . . . . . 80 5.51. 7.C.6.6. Session Accounting Correspondence . . . . . . . 80 5.52. 7.C.6.7. Settlement Completeness . . . . . . . . . . . . 80 5.53. 7.C.7. Representative Data Structures . . . . . . . . . 80 5.54. 7.C.7.1. Logical Session Record . . . . . . . . . . . . 80 5.55. 7.C.7.2. Session Governing-Condition Record . . . . . . 81 5.56. 7.C.7.3. Operator Context Record . . . . . . . . . . . . 81 Das Expires 3 May 2027 [Page 4] Internet-Draft Telecom Session Operational Consistency October 2026 5.57. 7.C.7.4. Session Resource State . . . . . . . . . . . . 81 5.58. 7.C.7.5. Session Lifecycle Operation . . . . . . . . . . 81 5.59. 7.C.7.6. Usage and Accounting Record . . . . . . . . . . 82 5.60. 7.C.7.7. Lifecycle Transition Assessment . . . . . . . . 82 5.61. 7.C.7.8. Session Closure Record . . . . . . . . . . . . 82 5.62. 7.C.8. Common Workflow C-CW-01 - Detailed Operational Procedure . . . . . . . . . . . . . . . . . . . . . . . 83 5.63. C-CW-01.01 - Receive or Identify the Session Establishment Context . . . . . . . . . . . . . . . . . . . . . . . . 83 5.64. C-CW-01.02 - Resolve Logical Session Identity . . . . . . 83 5.65. C-CW-01.03 - Associate Subscriber or Service Context . . 83 5.66. C-CW-01.04 - Establish the Initial Governing-Condition State . . . . . . . . . . . . . . . . . . . . . . . . . 83 5.67. C-CW-01.05 - Establish Operator Responsibilities . . . . 84 5.68. C-CW-01.06 - Associate Supporting Network Resources . . . 84 5.69. C-CW-01.07 - Identify Accounting and Usage Context . . . 84 5.70. C-CW-01.08 - Construct Initial Session State . . . . . . 84 5.71. C-CW-01.09 - Observe a Governing-Condition Change . . . . 84 5.72. C-CW-01.10 - Resolve Event Identity and Source Generation . . . . . . . . . . . . . . . . . . . . . . 85 5.73. C-CW-01.11 - Determine Event-Time Applicability . . . . . 85 5.74. C-CW-01.12 - Determine the Affected Session Scope . . . . 85 5.75. C-CW-01.13 - Evaluate Governing-State Correspondence . . 85 5.76. C-CW-01.14 - Identify Current Operator and Resource State . . . . . . . . . . . . . . . . . . . . . . . . . 85 5.77. C-CW-01.15 - Identify Outstanding Session Operations . . 86 5.78. C-CW-01.16 - Construct Candidate Lifecycle Transitions . 86 5.79. C-CW-01.17 - Evaluate Session Identity Continuity . . . . 86 5.80. C-CW-01.18 - Evaluate Subscriber and Service-State Applicability . . . . . . . . . . . . . . . . . . . . . 86 5.81. C-CW-01.19 - Evaluate Operator-Context Correspondence . . 87 5.82. C-CW-01.20 - Evaluate Resource Modification Requirements . . . . . . . . . . . . . . . . . . . . . 87 5.83. C-CW-01.21 - Evaluate Usage and Reservation Implications . . . . . . . . . . . . . . . . . . . . . 87 5.84. C-CW-01.22 - Evaluate Concurrent Lifecycle Operations . . 87 5.85. C-CW-01.23 - Determine the Applicable Transition Preconditions . . . . . . . . . . . . . . . . . . . . . 87 5.86. C-CW-01.24 - Select or Retain a Qualified Transition Candidate . . . . . . . . . . . . . . . . . . . . . . . 88 5.87. C-CW-01.25 - Associate the Operation with Existing Effectuation Controls . . . . . . . . . . . . . . . . . 88 5.88. C-CW-01.26 - Observe Operation Submission and Acceptance . . . . . . . . . . . . . . . . . . . . . . 88 5.89. C-CW-01.27 - Observe Applied Network-Resource Effects . . 88 5.90. C-CW-01.28 - Reconcile Unknown or Partial Transition Outcomes . . . . . . . . . . . . . . . . . . . . . . . 88 5.91. C-CW-01.29 - Reconcile Operator-Side State . . . . . . . 89 Das Expires 3 May 2027 [Page 5] Internet-Draft Telecom Session Operational Consistency October 2026 5.92. C-CW-01.30 - Reconcile Usage Reports . . . . . . . . . . 89 5.93. C-CW-01.31 - Reconcile Accounting and Reservation State . . . . . . . . . . . . . . . . . . . . . . . . . 89 5.94. C-CW-01.32 - Determine Whether Session Continuation Is Established . . . . . . . . . . . . . . . . . . . . . . 89 5.95. C-CW-01.33 - Evaluate Session Termination Conditions . . 90 5.96. C-CW-01.34 - Reconcile Outstanding Resource Cleanup . . . 90 5.97. C-CW-01.35 - Reconcile Final Usage and Settlement Information . . . . . . . . . . . . . . . . . . . . . . 90 5.98. C-CW-01.36 - Reevaluate Following a Material State Change . . . . . . . . . . . . . . . . . . . . . . . . 90 5.99. C-CW-01.37 - Preserve Session-Lifecycle Reconstruction Evidence . . . . . . . . . . . . . . . . . . . . . . . 90 5.100. C-CW-01.38 - Produce the Final Lifecycle Correspondence Result . . . . . . . . . . . . . . . . . . . . . . . . 91 5.101. 7.C.9. Common Workflow State Model . . . . . . . . . . 91 5.102. 7.C.10. Common Technical Invariants . . . . . . . . . . 92 5.103. C-I04 - An operator transition does not automatically imply logical session replacement. . . . . . . . . . . 92 5.104. C-I05 - Logical session continuation does not automatically establish unchanged governing conditions. . . . . . . . . . . . . . . . . . . . . . . 92 5.105. C-I12 - Numeric versions are not compared across unrelated version namespaces without justified mapping. . . . . . 93 5.106. C-I14 - Repeated delivery of one usage report does not automatically represent repeated usage. . . . . . . . . 93 5.107. C-I19 - A subscriber-wide change does not automatically affect every session identically. . . . . . . . . . . . 93 5.108. C-I20 - A SIM-related event does not automatically establish termination of an existing data session. . . 93 5.109. C-I30 - A lifecycle transition may preserve some state dimensions while changing others. . . . . . . . . . . . 94 5.110. C-I34 - Session state reconstruction does not automatically provide operational authorization. . . . 94 5.111. C-I40 - No implementation guarantee extends beyond its actual source, receiver, operator, and accounting contracts. . . . . . . . . . . . . . . . . . . . . . . 94 5.112. 7.C.11. Mathematical Formulation - Common Workflow Overview . . . . . . . . . . . . . . . . . . . . . . . 95 5.113. 7.C.11.1. Session State Vector . . . . . . . . . . . . 95 5.114. 7.C.11.2. Governing-Condition Applicability . . . . . . 95 5.115. 7.C.11.3. Transition Compatibility . . . . . . . . . . 95 5.116. 7.C.11.4. State Continuity Under Resource Replacement . . . . . . . . . . . . . . . . . . . . . . 96 5.117. 7.C.11.5. Usage Interval Correspondence . . . . . . . . 96 5.118. 7.C.11.6. Cumulative Counter Difference . . . . . . . . 96 5.119. 7.C.11.7. Reservation and Consumption . . . . . . . . . 97 5.120. 7.C.11.8. Cross-Operator State Correspondence . . . . . 97 Das Expires 3 May 2027 [Page 6] Internet-Draft Telecom Session Operational Consistency October 2026 5.121. 7.C.11.9. Session Closure . . . . . . . . . . . . . . . 97 5.122. 7.C.11.10. Lifecycle Evidence Reconciliation . . . . . 98 5.123. 7.C.12. Detailed Implementable Pseudocode - C-ALG-01 . 98 5.124. 7.C.12.1. Core Types . . . . . . . . . . . . . . . . . 98 5.125. 7.C.12.2. Establish the Initial Session Context . . . . 99 5.126. 7.C.12.3. Qualify a Governing-Condition Event . . . . . 100 5.127. 7.C.12.4. Generate Candidate Lifecycle Transitions . . 100 5.128. 7.C.12.5. Evaluate a Transition Candidate . . . . . . . 101 5.129. 7.C.12.6. Reconcile Asynchronous Effects . . . . . . . 102 5.130. 7.C.12.7. Reconcile Usage and Accounting . . . . . . . 103 5.131. 7.C.12.8. Reconcile Cross-Operator State . . . . . . . 103 5.132. 7.C.12.9. Determine Session Closure . . . . . . . . . . 104 5.133. 7.C.12.10. Common Workflow Orchestration . . . . . . . 105 5.134. 7.C.13. Worked Technical Examples . . . . . . . . . . . 106 5.135. 7.C.13.1. Example 1 - Active Session with a Changed Subscription Condition . . . . . . . . . . . . . . . . 106 5.136. 7.C.13.2. Example 2 - SIM-Related Event Does Not Prove Session Termination . . . . . . . . . . . . . . . . . . 107 5.137. 7.C.13.3. Example 3 - Roaming with Home and Visited Operator State . . . . . . . . . . . . . . . . . . . . 107 5.138. 7.C.13.4. Example 4 - QoS Modification Accepted but Not Observed . . . . . . . . . . . . . . . . . . . . . . . 107 5.139. 7.C.13.5. Example 5 - Two Concurrent Session Extensions . . . . . . . . . . . . . . . . . . . . . . 108 5.140. 7.C.13.6. Example 6 - Reservation and Consumption . . . 108 5.141. 7.C.13.7. Example 7 - Duplicate Cumulative Usage Reports . . . . . . . . . . . . . . . . . . . . . . . . 108 5.142. 7.C.13.8. Example 8 - Consent Withdrawal with Scope-Specific Effects . . . . . . . . . . . . . . . . 109 5.143. 7.C.13.9. Example 9 - User-Plane Release with Accounting Pending . . . . . . . . . . . . . . . . . . . . . . . . 109 5.144. 7.C.13.10. Example 10 - Remote Operator Failure During Release . . . . . . . . . . . . . . . . . . . . . . . . 109 5.145. 7.C.13.11. Example 11 - Resource Change Without New Logical Session . . . . . . . . . . . . . . . . . . . . 110 5.146. 7.C.13.12. Example 12 - Charging Report Arrives after Closure . . . . . . . . . . . . . . . . . . . . . . . . 110 5.147. 7.C.13.13. Example 13 - Source Counter Reset . . . . . 110 5.148. 7.C.13.14. Example 14 - Two Operator Revision Numbers . . . . . . . . . . . . . . . . . . . . . . . . 111 5.149. 7.C.13.15. Example 15 - Failed API Deletion with Resource Still Allocated . . . . . . . . . . . . . . . . . . . . 111 5.150. 7.C.13.16. Example 16 - Partial Operator Failure and Deferred Settlement . . . . . . . . . . . . . . . . . . 111 5.151. 7.C.14. Common Workflow Implementation Alternatives . . 112 5.152. C-DA-01 - Centralized Session-Lifecycle Reconciliation . . . . . . . . . . . . . . . . . . . . 112 5.153. C-DA-02 - Distributed Operator-Local Reconciliation . . 112 Das Expires 3 May 2027 [Page 7] Internet-Draft Telecom Session Operational Consistency October 2026 5.154. C-DA-03 - Event-Sourced Lifecycle State . . . . . . . . 112 5.155. C-DA-04 - Snapshot-and-Delta Session Reconstruction . . 112 5.156. C-DA-05 - Relational Session-State Representation . . . 112 5.157. C-DA-06 - Graph-Based Resource and Operator Correspondence . . . . . . . . . . . . . . . . . . . . 113 5.158. C-DA-07 - State-Machine-Based Lifecycle Evaluation . . . 113 5.159. C-DA-08 - Constraint-Based Lifecycle Reconstruction . . 113 5.160. C-DA-09 - Conditional Native Session Modification . . . 113 5.161. C-DA-10 - Asynchronous Job-Based Lifecycle Processing . 113 5.162. C-DA-11 - State-Observation-Based Reconciliation . . . . 113 5.163. C-DA-12 - Home-Routed Roaming Correspondence . . . . . . 114 5.164. C-DA-13 - Local-Breakout Roaming Correspondence . . . . 114 5.165. C-DA-14 - Abstract Interoperator State Exchange . . . . 114 5.166. C-DA-15 - Usage-Report Lineage Reconstruction . . . . . 114 5.167. C-DA-16 - Event-Time-Based Accounting Reconciliation . . 114 5.168. C-DA-17 - Reservation-Aware Usage Reconciliation . . . . 114 5.169. C-DA-18 - Source-Scoped Revision Handling . . . . . . . 114 5.170. C-DA-19 - Partial-State Session Recovery . . . . . . . . 115 5.171. C-DA-20 - Deferred Accounting Settlement . . . . . . . . 115 5.172. C-DA-21 - Hardware-Adjacent Resource Observation . . . . 115 5.173. C-DA-22 - Privacy-Minimizing Operator Correspondence . . 115 5.174. C-DA-23 - Multi-Access Session Correspondence . . . . . 115 5.175. C-DA-24 - Optional Advanced Timing and Hybrid Computation . . . . . . . . . . . . . . . . . . . . . . 115 5.176. 7.C.15. Representative Proposed Verification Tests . . 116 5.177. Test . . . . . . . . . . . . . . . . . . . . . . . . . . 116 5.178. Scenario Expected technical result . . . . . . . . . . . 116 5.179. ID . . . . . . . . . . . . . . . . . . . . . . . . . . . 116 5.180. 7.C.16. PHOSITA Reference Implementation . . . . . . . 120 5.181. 7.C.16.1. Reference Environment . . . . . . . . . . . . 120 5.182. 7.C.16.2. Initial Reference Operation . . . . . . . . . 120 5.183. 7.C.16.3. State-Change Injection . . . . . . . . . . . 120 5.184. 7.C.16.4. Delayed Resource Application . . . . . . . . 120 5.185. 7.C.16.5. Cross-Operator Change . . . . . . . . . . . . 121 5.186. 7.C.16.6. Accounting Delay . . . . . . . . . . . . . . 121 5.187. 7.C.16.7. Concurrent Requests . . . . . . . . . . . . . 121 5.188. 7.C.16.8. Partial Failure . . . . . . . . . . . . . . . 121 5.189. 7.C.16.9. Closure . . . . . . . . . . . . . . . . . . . 121 5.190. 7.C.16.10. Result Validation . . . . . . . . . . . . . 121 5.191. 7.C.17. Standards and Industrial Implementation References . . . . . . . . . . . . . . . . . . . . . . 122 5.192. 7.C.17.1. 3GPP PDU Session Procedures . . . . . . . . . 122 5.193. 7.C.17.2. PFCP Resource-State Information . . . . . . . 122 5.194. 7.C.17.3. Charging and Usage . . . . . . . . . . . . . 122 5.195. 7.C.17.4. Programmable Network APIs . . . . . . . . . . 123 5.196. 7.C.17.5. Roaming and Operator Interoperability . . . . 123 5.197. 7.C.17.6. Other Session Technologies . . . . . . . . . 123 Das Expires 3 May 2027 [Page 8] Internet-Draft Telecom Session Operational Consistency October 2026 5.198. Embodiment 1.C - SIM-Related Trust-State Changes During Active Session Continuity . . . . . . . . . . . . . . . 123 5.199. Embodiment 3.C - Concurrent Programmable Session Updates and Usage-Quota State Reconciliation . . . . . . . . . 124 5.200. Embodiment 4.C - Service Effect, Network Usage, and Charging-Record Correspondence . . . . . . . . . . . . 124 5.201. Embodiment 5.C - Purpose-Scoped Consent-State Changes During Active Telecommunications Service . . . . . . . 125 5.202. 7.C.19. Implementation and Interoperability Relationships . . . . . . . . . . . . . . . . . . . . . 125 5.203. Relationship C-2 - Governing-condition state correspondence: Determining which . . . . . . . . . . . 126 5.204. 7.C.20. Industrial Applicability . . . . . . . . . . . 127 5.205. 7.C.21. Relationship to the Foundational Shared Technical Foundation . . . . . . . . . . . . . . . . . . . . . . 128 5.206. 7.C.22. Non-Limiting Implementation Character . . . . . 129 5.207. 7.C.23. Common Workflow Conclusion . . . . . . . . . . 130 5.208. Common Workflow C-CW-01 therefore provides the technical foundation for . . . . . . . . . . . . . . . . . . . . 131 5.209. Embodiments 1.C through 6.C, without repeating the radio-observation, multiagent . . . . . . . . . . . . . 131 5.210. EMBODIMENT 1.C - SIM-RELATED TRUST-STATE TRANSITIONS, ACTIVE TELECOMMUNICATIONS SESSION CORRESPONDENCE, AND EVIDENCE- . . . . . . . . . . . . . . . . . . . . . . . 131 5.211. QUALIFIED CONTINUITY RECONSTRUCTION . . . . . . . . . . 131 5.212. 1.C.1. Embodiment Identification . . . . . . . . . . . 131 5.213. Related Embodiments: . . . . . . . . . . . . . . . . . . 132 5.214. Question A - What changed? . . . . . . . . . . . . . . . 134 5.215. Question B - Which sessions are affected? . . . . . . . 134 5.216. Question C - What actually happened to those sessions? . . . . . . . . . . . . . . . . . . . . . . . 134 5.217. 1.C.2. Particular Technical Problem Space . . . . . . . 135 5.218. 1.C.2.1. A Mobile Number Is Not a Universal Session Identifier . . . . . . . . . . . . . . . . . . . . . . 135 5.219. 1.C.2.2. A SIM-Swap API Response May Not Expose the Underlying Subscription Identity . . . . . . . . . . . 135 5.220. 1.C.2.3. A Positive SIM-Change Signal Is Not Automatically Evidence of Fraud . . . . . . . . . . . . 136 5.221. 1.C.2.4. A Negative SIM-Change Response May Have Limited Historical Scope . . . . . . . . . . . . . . . . . . . 136 5.222. 1.C.2.5. An External Event May Arrive After Its Effective Time . . . . . . . . . . . . . . . . . . . . . . . . . 136 5.223. 1.C.2.6. The Meaning of a SIM Event Depends on Its Source . . . . . . . . . . . . . . . . . . . . . . . . 137 5.224. 1.C.2.7. Different Subscriber Identifiers Have Different Scopes . . . . . . . . . . . . . . . . . . . . . . . . 137 5.225. 1.C.2.8. One Subscriber May Have Several Active Sessions . . . . . . . . . . . . . . . . . . . . . . . 137 Das Expires 3 May 2027 [Page 9] Internet-Draft Telecom Session Operational Consistency October 2026 5.226. 1.C.2.9. One Device May Have Several Active Subscription Profiles . . . . . . . . . . . . . . . . . . . . . . . 138 5.227. 1.C.2.10. An eSIM Profile Can Be Installed Without Being Enabled . . . . . . . . . . . . . . . . . . . . . . . . 138 5.228. 1.C.2.11. A Profile Disable Event Does Not Prove Every Session Was Released . . . . . . . . . . . . . . . . . 138 5.229. 1.C.2.13. Source-Reported Subscriber Association May Be Corrected . . . . . . . . . . . . . . . . . . . . . . . 139 5.230. 1.C.2.14. Subscriber-Data Notifications May Precede Session Modifications . . . . . . . . . . . . . . . . . 139 5.231. 1.C.2.15. Network Function Replacement Can Obscure the Session Outcome . . . . . . . . . . . . . . . . . . . . 139 5.232. 1.C.2.16. Local State May Not Prove User-Plane Effect . . . . . . . . . . . . . . . . . . . . . . . . 140 5.233. 1.C.2.17. An Update May Affect Only Selected Service Conditions . . . . . . . . . . . . . . . . . . . . . . 140 5.234. 1.C.2.18. Emergency and Special Services May Have Distinct Procedures . . . . . . . . . . . . . . . . . . 140 5.235. 1.C.2.20. A SIM-Swap Risk Signal May Become Stale . . . 141 5.236. 1.C.2.21. A Device Change May Occur Without a SIM Change . . . . . . . . . . . . . . . . . . . . . . . . 141 5.237. 1.C.2.22. Number Portability and Number Reassignment Require Distinct Interpretation . . . . . . . . . . . . 141 5.238. 1.C.2.23. A SIM Change Can Affect an Application's Trust Assessment Without Proving Network Session Failure . . 142 5.239. 1.C.2.24. Out-of-Order Events Can Produce False State Regressions . . . . . . . . . . . . . . . . . . . . . . 142 5.240. 1.C.2.25. Replayed Events Can Cause Duplicate Transitions . . . . . . . . . . . . . . . . . . . . . . 142 5.241. 1.C.2.26. A Partial Session Release Must Be Represented Explicitly . . . . . . . . . . . . . . . . . . . . . . 143 5.242. 1.C.2.27. Data Privacy Limits Available Identity Correspondence . . . . . . . . . . . . . . . . . . . . 143 5.243. 1.C.2.28. Accurate Reconstruction Does Not Establish Execution Authority . . . . . . . . . . . . . . . . . . 143 5.244. 1.C.3. Specific Technical Contribution Sought . . . . . 143 5.245. 1.C.4. Representative Technical Architecture . . . . . 145 5.246. 1.C.4.1. SIM-Related Event Intake . . . . . . . . . . . 145 5.247. 1.C.4.2. Event-Semantic Classifier . . . . . . . . . . 145 5.248. 1.C.4.3. Identity Correspondence Resolver . . . . . . . 145 5.249. 1.C.4.4. Session Inventory Resolver . . . . . . . . . . 145 5.250. 1.C.4.5. Subscriber-State Revision Repository . . . . . 146 5.251. 1.C.4.6. eSIM Profile State Adapter . . . . . . . . . . 146 5.252. 1.C.4.7. Multi-Subscription Context Evaluator . . . . . 146 5.253. 1.C.4.8. Session Applicability Evaluator . . . . . . . 146 5.254. 1.C.4.9. Session Transition Model . . . . . . . . . . . 146 5.255. 1.C.4.10. Control-Plane Status Observer . . . . . . . . 147 5.256. 1.C.4.11. User-Plane State Observer . . . . . . . . . . 147 Das Expires 3 May 2027 [Page 10] Internet-Draft Telecom Session Operational Consistency October 2026 5.257. 1.C.4.12. Outstanding Operation Reconciler . . . . . . 147 5.258. 1.C.4.13. Session Continuity Evaluator . . . . . . . . 147 5.259. 1.C.4.14. Session Release and Cleanup Observer . . . . 147 5.260. 1.C.4.15. Evidence Coverage Evaluator . . . . . . . . . 147 5.261. 1.C.4.16. Reconstruction Revision Manager . . . . . . . 148 5.262. 1.C.4.17. Optional Risk-Assessment Interface . . . . . 148 5.263. 1.C.4.18. Optional Existing Effectuation Interface . . 148 5.264. 1.C.5. Necessary Embodiment-Specific Interpretations . 148 5.265. 1.C.5.1. SIM-Related State Event . . . . . . . . . . . 148 5.266. 1.C.5.2. Event-to-Session Correspondence . . . . . . . 148 5.267. 1.C.5.3. Subscriber-Association Revision . . . . . . . 149 5.268. 1.C.5.4. Session Impact Set . . . . . . . . . . . . . . 149 5.269. 1.C.5.5. Continuity Evidence . . . . . . . . . . . . . 149 5.270. 1.C.5.6. Transition Boundary . . . . . . . . . . . . . 149 5.271. 1.C.5.7. Residual Session Context . . . . . . . . . . . 149 5.272. 1.C.6. Representative Data Structures . . . . . . . . . 149 5.273. 1.C.6.1. SIM-Related Source Event . . . . . . . . . . . 149 5.274. 1.C.6.2. Identity Correspondence Record . . . . . . . . 150 5.275. 1.C.6.3. Candidate Session Record . . . . . . . . . . . 150 5.276. 1.C.6.4. eSIM Profile Context . . . . . . . . . . . . . 150 5.277. 1.C.6.5. Session Transition Candidate . . . . . . . . . 151 5.278. 1.C.6.6. Session Effect Observation . . . . . . . . . . 151 5.279. 1.C.6.7. Transition Outcome . . . . . . . . . . . . . . 151 5.280. 1.C.6.8. Session Impact Reconstruction . . . . . . . . 151 5.281. 1.C.7. Detailed Operational Procedure . . . . . . . . . 152 5.282. 1.C-01 - Receive the SIM-Related Event . . . . . . . . . 152 5.283. 1.C-02 - Determine the Source and Event Contract . . . . 152 5.284. 1.C-03 - Establish Event Identity . . . . . . . . . . . 152 5.285. 1.C-04 - Determine the Event's Technical Category . . . 152 5.286. 1.C-05 - Determine the Subject Identity Scope . . . . . 152 5.287. 1.C-06 - Determine Historical Monitoring Limits . . . . 153 5.288. 1.C-07 - Establish Event Timing . . . . . . . . . . . . 153 5.289. 1.C-08 - Obtain Supported Identity Mappings . . . . . . 153 5.290. 1.C-09 - Check Identity Generation and Reassignment . . 153 5.291. 1.C-10 - Enumerate Candidate Sessions . . . . . . . . . 153 5.292. 1.C-11 - Distinguish Other Subscription Profiles . . . . 154 5.293. 1.C-12 - Associate Each Session with Its Governing State . . . . . . . . . . . . . . . . . . . . . . . . . 154 5.294. 1.C-13 - Determine Which Conditions Changed . . . . . . 154 5.295. 1.C-14 - Evaluate Session-Specific Applicability . . . . 154 5.296. 1.C-15 - Determine Outstanding Session Operations . . . 154 5.297. 1.C-16 - Identify Applicable Existing Network Procedures . . . . . . . . . . . . . . . . . . . . . . 155 5.298. 1.C-17 - Evaluate Logical Session Continuity . . . . . . 155 5.299. 1.C-18 - Evaluate Multi-Session Effects . . . . . . . . 155 5.300. 1.C-19 - Evaluate Multi-Profile Effects . . . . . . . . 155 5.301. 1.C-20 - Evaluate Current Operator Context . . . . . . . 155 5.302. 1.C-21 - Evaluate Network Resource Preconditions . . . . 156 Das Expires 3 May 2027 [Page 11] Internet-Draft Telecom Session Operational Consistency October 2026 5.303. 1.C-22 - Construct Candidate Session Transitions . . . . 156 5.304. 1.C-23 - Evaluate Each Candidate's Technical Applicability . . . . . . . . . . . . . . . . . . . . . 156 5.305. 1.C-24 - Determine Whether New Network Effectuation Is Required . . . . . . . . . . . . . . . . . . . . . . . 156 5.306. 1.C-25 - Associate Consequential Operations with Existing Controls . . . . . . . . . . . . . . . . . . . . . . . 157 5.307. 1.C-26 - Observe Operation Submission . . . . . . . . . 157 5.308. 1.C-27 - Interpret Receiver Acceptance . . . . . . . . . 157 5.309. 1.C-28 - Observe Control-Plane Session Effects . . . . . 157 5.310. 1.C-29 - Observe User-Plane Resource Effects . . . . . . 157 5.311. 1.C-30 - Observe Service Continuity . . . . . . . . . . 158 5.312. 1.C-31 - Reconcile Unknown Remote Outcomes . . . . . . . 158 5.313. 1.C-32 - Identify Residual Earlier Session Contexts . . 158 5.314. 1.C-33 - Determine Whether Apparent Simultaneous Sessions Are Actually Distinct . . . . . . . . . . . . . . . . . 158 5.315. 1.C-34 - Evaluate Any Required Accounting Correspondence . . . . . . . . . . . . . . . . . . . . 158 5.316. 1.C-35 - Determine Final Per-Session Continuity Status . . . . . . . . . . . . . . . . . . . . . . . . 159 5.317. 1.C-36 - Evaluate Additional Evidence Requirements . . . 159 5.318. 1.C-37 - Reevaluate After Source Corrections . . . . . . 159 5.319. 1.C-38 - Reevaluate After Resource or Function Changes . . . . . . . . . . . . . . . . . . . . . . . . 159 5.320. 1.C-39 - Preserve the Reconstruction History . . . . . . 159 5.321. 1.C-40 - Produce the Session-Continuity Result . . . . . 160 5.322. 1.C.8. Technical Invariants . . . . . . . . . . . . . . 160 5.323. C1-I03 - A negative bounded SIM-swap check is not proof of an unchanged lifetime history. . . . . . . . . . . . . 160 5.324. C1-I07 - A reassigned mobile number must not automatically inherit the earlier subscriber's session history. . . . 160 5.325. C1-I10 - eSIM profile enablement does not automatically prove successful network registration. . . . . . . . . 160 5.326. C1-I21 - A subscriber-data notification does not itself prove an SMF-initiated procedure completed. . . . . . . 161 5.327. C1-I26 - Session continuity does not require one unchanged network-function instance. . . . . . . . . . . . . . . 161 5.328. C1-I34 - A change in resource identity does not automatically establish a second billable session. . . 162 5.329. C1-I37 - An unresolved event-to-session correspondence cannot silently become established. . . . . . . . . . . 162 5.330. C1-I38 - A demonstrated inapplicable event must not be treated as merely missing data. . . . . . . . . . . . . 162 5.331. C1-I48 - No claimed guarantee extends beyond the actual source, operator, and network-function contracts. . . . 163 5.332. 1.C.9. Embodiment-Specific Mathematical Formulation . . 163 5.333. 1.C.9.1. Identity Domains . . . . . . . . . . . . . . . 163 5.334. 1.C.9.2. Time-Qualified Subscriber Mapping . . . . . . 163 Das Expires 3 May 2027 [Page 12] Internet-Draft Telecom Session Operational Consistency October 2026 5.335. 1.C.9.3. Event Applicability . . . . . . . . . . . . . 164 5.336. 1.C.9.4. Candidate Session Impact Set . . . . . . . . . 164 5.337. 1.C.9.5. Event Effective-Time Interval . . . . . . . . 164 5.338. 1.C.9.6. Source Lookback Limitation . . . . . . . . . . 165 5.339. 1.C.9.7. Multi-Dimensional Session State . . . . . . . 165 5.340. 1.C.9.8. Transition Feasibility . . . . . . . . . . . . 165 5.341. 1.C.9.9. Resource-Generation Correspondence . . . . . . 165 5.342. 1.C.9.10. Possible State Reconstruction . . . . . . . . 166 5.343. 1.C.9.11. Continuity Objective . . . . . . . . . . . . 166 5.344. 1.C.9.12. Change-Impact Reassessment . . . . . . . . . 166 5.345. 1.C.9.13. Illustrative Lookback Example . . . . . . . . 167 5.346. 1.C.9.14. Illustrative Session-Impact Example . . . . . 167 5.347. 1.C.10. Implementable Pseudocode - C-ALG-02 . . . . . . 167 5.348. 1.C.10.1. Technical Types . . . . . . . . . . . . . . . 167 5.349. 1.C.10.2. Qualify the Event . . . . . . . . . . . . . . 168 5.350. 1.C.10.3. Resolve Subscriber Correspondence . . . . . . 169 5.351. 1.C.10.4. Enumerate Candidate Sessions . . . . . . . . 169 5.352. 1.C.10.5. Evaluate Per-Session Applicability . . . . . 170 5.353. 1.C.10.6. Construct Session Transition Candidates . . . 170 5.354. 1.C.10.7. Reconcile Network Effects . . . . . . . . . . 171 5.355. 1.C.10.8. Handle Unknown Remote State . . . . . . . . . 172 5.356. 1.C.10.9. Reconcile Concurrent Subscription Profiles . 172 5.357. 1.C.10.10. Reconcile Residual Earlier Sessions . . . . 173 5.358. 1.C.10.11. Reevaluate After a Mapping Correction . . . 174 5.359. 1.C.10.12. Complete Embodiment Algorithm . . . . . . . 175 5.360. 1.C.11. Worked Technical Examples . . . . . . . . . . . 177 5.361. 1.C.11.1. Example 1 - Recent SIM Change While Data Session Remains Recorded . . . . . . . . . . . . . . . 177 5.362. 1.C.11.2. Example 2 - A Legitimate Replacement SIM . . 177 5.363. 1.C.11.3. Example 3 - No SIM Change Within the Lookback Period . . . . . . . . . . . . . . . . . . . . . . . . 177 5.364. 1.C.11.4. Example 4 - Null Latest-Change Date . . . . . 178 5.365. 1.C.11.5. Example 5 - Three PDU Sessions, One Affected Service . . . . . . . . . . . . . . . . . . . . . . . . 178 5.366. 1.C.11.6. Example 6 - Profile Installed but Not Enabled . . . . . . . . . . . . . . . . . . . . . . . . 178 5.367. 1.C.11.7. Example 7 - Multiple Enabled Profiles . . . . 179 5.368. 1.C.11.8. Example 8 - Device Change Without Subscriber Change . . . . . . . . . . . . . . . . . . . . . . . . 179 5.369. 1.C.11.9. Example 9 - Mobile Number Reassignment . . . 179 5.370. 1.C.11.10. Example 10 - Notification Arrives Late . . . 180 5.371. 1.C.11.11. Example 11 - Out-of-Order Subscription Revisions . . . . . . . . . . . . . . . . . . . . . . . 180 5.372. 1.C.11.12. Example 12 - Duplicate SIM-Change Notification . . . . . . . . . . . . . . . . . . . . . 180 5.373. 1.C.11.13. Example 13 - Subscription Update Followed by Pending Session Modification . . . . . . . . . . . . . 180 Das Expires 3 May 2027 [Page 13] Internet-Draft Telecom Session Operational Consistency October 2026 5.374. 1.C.11.14. Example 14 - Session Release with Lost Response . . . . . . . . . . . . . . . . . . . . . . . 181 5.375. 1.C.11.15. Example 15 - New Session While Old Context Persists . . . . . . . . . . . . . . . . . . . . . . . 181 5.376. 1.C.11.16. Example 16 - Emergency-Service Exception . . 181 5.377. 1.C.11.17. Example 17 - Function Replacement Without Session Replacement . . . . . . . . . . . . . . . . . . 182 5.378. 1.C.11.18. Example 18 - Application Risk and Network Continuity Disagree Without Contradiction . . . . . . . 182 5.379. 1.C.12. Specific Design-Around Alternatives and Implementation Pathways . . . . . . . . . . . . . . . . 182 5.380. C-1-DA-01 - Operator-Internal Subscriber-to-Session Resolver . . . . . . . . . . . . . . . . . . . . . . . 183 5.381. C-1-DA-02 - Privacy-Minimized External Event Resolver . 183 5.382. C-1-DA-03 - Historical SIM-Swap Query Adapter . . . . . 184 5.383. C-1-DA-04 - Event-Subscription-Based SIM-Change Processing . . . . . . . . . . . . . . . . . . . . . . 184 5.384. C-1-DA-05 - Subscriber-Data Notification Adapter . . . . 184 5.385. C-1-DA-06 - Multi-Source Event-Semantic Reconciliation . . . . . . . . . . . . . . . . . . . . 185 5.386. C-1-DA-07 - Source-Versioned Association History . . . . 185 5.387. C-1-DA-08 - Event-Sourced Subscriber-Session Reconstruction . . . . . . . . . . . . . . . . . . . . 186 5.388. C-1-DA-09 - Snapshot-and-Delta Session Reconstruction Mechanism: A saved subscriber-session snapshot is combined with subsequent updates. . . . . . . . . . . . . . . . 186 5.389. C-1-DA-10 - Relational Identity Correspondence . . . . . 186 5.390. C-1-DA-11 - Graph-Based Association Reconstruction . . . 187 5.391. C-1-DA-12 - Constraint-Based Identity and Session Matching . . . . . . . . . . . . . . . . . . . . . . . 187 5.392. C-1-DA-13 - Time-Interval-Based Event Applicability . . 187 5.393. C-1-DA-14 - Logical Event-Ordering-Based Applicability . . . . . . . . . . . . . . . . . . . . . 188 5.394. C-1-DA-15 - Device and Subscription Identity Separation . . . . . . . . . . . . . . . . . . . . . . 188 5.395. C-1-DA-16 - eSIM Profile-State Adapter . . . . . . . . . 188 5.396. C-1-DA-17 - Multiple Enabled Profile Processing . . . . 189 5.397. C-1-DA-18 - Multiple Active PDU Session Evaluation Mechanism: One subscriber has several active PDU Session contexts. . . . . . . . . . . . . . . . . . . . . . . . 189 5.398. C-1-DA-19 - Scope-Specific Subscriber-Policy Reconciliation . . . . . . . . . . . . . . . . . . . . 189 5.399. C-1-DA-20 - Existing SMF Procedure Correspondence . . . 190 5.400. C-1-DA-21 - User-Plane Observation-Based Continuity Mechanism: The processor obtains supporting user-plane state for an affected session. . . . . . . . . . . . . 190 5.401. C-1-DA-22 - Service-Observation-Based Continuity . . . . 191 Das Expires 3 May 2027 [Page 14] Internet-Draft Telecom Session Operational Consistency October 2026 5.402. C-1-DA-23 - Asynchronous Transition Outcome Reconciliation . . . . . . . . . . . . . . . . . . . . 191 5.403. C-1-DA-24 - Conditional Session-Modification Processing . . . . . . . . . . . . . . . . . . . . . . 191 5.404. C-1-DA-25 - Residual Session Context Reconciliation Mechanism: Older session records are inspected after a subscriber association change. . . . . . . . . . . . . 192 5.405. C-1-DA-26 - Network Function Replacement Continuity Mechanism: Logical sessions are associated across network-function instance replacement. . . . . . . . . 192 5.406. C-1-DA-27 - Mobile Number Portability Correspondence Mechanism: Operator and number-portability records are interpreted separately from SIM . . . . . . . . . . . . 192 5.407. C-1-DA-28 - Mobile Number Reassignment Protection Mechanism: Historical associations are separated by subscriber generation or effective . . . . . . . . . . 193 5.408. C-1-DA-29 - Privacy-Minimizing Session Impact Reporting . . . . . . . . . . . . . . . . . . . . . . . 193 5.409. C-1-DA-30 - Subscriber Event Correction and Revision Handling . . . . . . . . . . . . . . . . . . . . . . . 194 5.410. C-1-DA-31 - Concurrent Change-Conflict Evaluation . . . 194 5.411. C-1-DA-32 - Special-Service Exception Handling . . . . . 194 5.412. C-1-DA-33 - Hardware- or Device-Originated Profile Evidence . . . . . . . . . . . . . . . . . . . . . . . 195 5.413. C-1-DA-34 - Cryptographically Authenticated Subscriber Events . . . . . . . . . . . . . . . . . . . . . . . . 195 5.414. C-1-DA-35 - Federated Operator-Local Impact Reconstruction . . . . . . . . . . . . . . . . . . . . 196 5.415. C-1-DA-36 - Deterministic and Statistical Hybrid Assessment . . . . . . . . . . . . . . . . . . . . . . 196 5.416. 1.C.13. Technical Design-Around Correspondence . . . . 197 5.417. 1.C.14. PHOSITA Reference Implementation . . . . . . . 198 5.418. 1.C.14.1. Reference System . . . . . . . . . . . . . . 198 5.419. 1.C.14.2. Minimum Synthetic Dataset . . . . . . . . . . 199 5.420. 1.C.14.3. Controlled Event Scenarios . . . . . . . . . 200 5.421. 1.C.15. Detailed PHOSITA Implementation Procedure . . . 200 5.422. 1.C.16. Failure and Adversarial Conditions . . . . . . 203 5.423. F1 - SIM-change event lacks sufficient subject information: Session mapping . . . . . . . . . . . . . 203 5.424. F13 - One of several PDU Sessions has affected service conditions: Per-session . . . . . . . . . . . . . . . . 204 5.425. F15 - Existing emergency session requires distinct treatment: Applicable special . . . . . . . . . . . . . 204 5.426. F16 - Session-modification request accepted but not applied: Lifecycle stages . . . . . . . . . . . . . . . 205 5.427. F17 - User-plane resource changes before control-plane record updates: State . . . . . . . . . . . . . . . . . 205 Das Expires 3 May 2027 [Page 15] Internet-Draft Telecom Session Operational Consistency October 2026 5.428. F35 - Source's event field semantics change after API upgrade: Schema/version . . . . . . . . . . . . . . . . 206 5.429. F42 - Assessment processor crashes before recording results: Reconstruction uses . . . . . . . . . . . . . 207 5.430. 1.C.17. Representative Proposed Verification Test Suite . . . . . . . . . . . . . . . . . . . . . . . . . 207 5.431. Test ID . . . . . . . . . . . . . . . . . . . . . . . . 207 5.432. Controlled scenario . . . . . . . . . . . . . . . . . . 207 5.433. Expected behavior . . . . . . . . . . . . . . . . . . . 207 5.434. 1.C.17.1. Test Evidence Requirements . . . . . . . . . 214 5.435. 1.C.18. Standards and Established Technology Correspondence . . . . . . . . . . . . . . . . . . . . 214 5.436. 1.C.18.1. 3GPP Session-Management Subscription Data . . 214 5.437. 1.C.18.2. Subscriber and Session Identity . . . . . . . 215 5.438. 1.C.18.3. CAMARA SIM Swap . . . . . . . . . . . . . . . 215 5.439. 1.C.18.4. SIM Swap Notifications . . . . . . . . . . . 215 5.440. 1.C.18.5. GSMA eSIM Remote Provisioning . . . . . . . . 216 5.441. 1.C.18.6. Network Resource State . . . . . . . . . . . 216 5.442. 1.C.18.7. Non-Limiting Industrial Environments . . . . 216 5.443. 1.C.19. Specific Claim-Supporting Relationships . . . . 216 5.444. Relationship 7 - Asynchronous outcome preservation: Distinguishing notification, . . . . . . . . . . . . . 217 5.445. 1.C.20. Relationship to the Foundational Shared Technical Foundation . . . . . . . . . . . . . . . . . . . . . . 218 5.446. 1.C.21. Particular Technical Effects . . . . . . . . . 219 5.447. 1.C.22. Non-Limiting Implementation Character . . . . . 220 5.448. 1.C.23. Conclusion . . . . . . . . . . . . . . . . . . 221 5.449. The central technical subject of Embodiment 1.C is the evidence-qualified . . . . . . . . . . . . . . . . . . 221 5.450. This completes Embodiment 1.C without repeating Common Workflow C-CW-01, . . . . . . . . . . . . . . . . . . . 222 5.451. EMBODIMENT 2.C - INTEROPERATOR ROAMING SESSION-STATE RECONSTRUCTION, DISTRIBUTED RESPONSIBILITY CORRESPONDENCE, . . . . . . . . . . . . . . . . . . . . 222 5.452. AND CONTINUITY ACROSS SERVING-NETWORK TRANSITIONS . . . 222 5.453. 2.C.1. Embodiment Identification . . . . . . . . . . . 222 5.454. Related Embodiments: . . . . . . . . . . . . . . . . . . 223 5.455. 2.C.2. Particular Technical Problem Space . . . . . . . 227 5.456. 2.C.2.1. Home-Routed and Local-Breakout Arrangements Have Different Responsibilities . . . . . . . . . . . . . . 227 5.457. 2.C.2.2. Session Identity and Local SM Context Identity Are Distinct . . . . . . . . . . . . . . . . . . . . . 227 5.458. 2.C.2.3. A Serving-Network Change Does Not Always Mean Session Replacement . . . . . . . . . . . . . . . . . . 227 5.459. 2.C.2.4. A Change of V-SMF May Be Unsupported . . . . . 228 5.460. 2.C.2.5. A Home-Side Record May Outlast the Visited Context . . . . . . . . . . . . . . . . . . . . . . . . 228 Das Expires 3 May 2027 [Page 16] Internet-Draft Telecom Session Operational Consistency October 2026 5.461. 2.C.2.6. A Visited-Side Record May Remain after Home-Side Release . . . . . . . . . . . . . . . . . . . . . . . . 228 5.462. 2.C.2.7. Local Context Release May Differ from Full Session Release . . . . . . . . . . . . . . . . . . . . 228 5.463. 2.C.2.8. Control-Plane and User-Plane State May Change at Different Times . . . . . . . . . . . . . . . . . . . . 229 5.464. 2.C.2.9. Session-Management Function Identity Can Change without Logical Session Identity Changing . . . . . . . 229 5.465. 2.C.2.10. Function Replacement May Also Require Session Release . . . . . . . . . . . . . . . . . . . . . . . . 229 5.466. 2.C.2.11. Access Mobility May Change the Session's Supporting Resources . . . . . . . . . . . . . . . . . 230 5.467. 2.C.2.12. Roaming Architecture May Include Additional Local Breakout Functions . . . . . . . . . . . . . . . 230 5.468. 2.C.2.13. Source and Target Functions May Temporarily Coexist . . . . . . . . . . . . . . . . . . . . . . . . 230 5.469. 2.C.2.14. Coexistence May Also Conceal Incomplete Cleanup . . . . . . . . . . . . . . . . . . . . . . . . 230 5.470. 2.C.2.15. Remote State May Be Abstracted by the Other Operator . . . . . . . . . . . . . . . . . . . . . . . 230 5.471. 2.C.2.16. Interoperator Status Messages May Arrive Out of Order . . . . . . . . . . . . . . . . . . . . . . . . . 231 5.472. 2.C.2.17. Different Operators May Have Different Clock Accuracy . . . . . . . . . . . . . . . . . . . . . . . 231 5.473. 2.C.2.18. An Interoperator API Response May Be Lost after Remote Processing . . . . . . . . . . . . . . . . . . . 231 5.474. 2.C.2.19. A Status Notification May Not Describe All Underlying Effects . . . . . . . . . . . . . . . . . . 232 5.475. 2.C.2.20. Different Network Functions May Maintain Different Revisions . . . . . . . . . . . . . . . . . . 232 5.476. 2.C.2.21. Some States May Be Known Only through Resource Observations . . . . . . . . . . . . . . . . . . . . . 232 5.477. 2.C.2.22. Session Continuity Does Not Guarantee Service Continuity . . . . . . . . . . . . . . . . . . . . . . 232 5.478. 2.C.2.23. Service Continuity Does Not Prove Logical Session Identity . . . . . . . . . . . . . . . . . . . 233 5.479. 2.C.2.24. QoS State May Differ across Operators . . . . 233 5.480. 2.C.2.25. Network Slice and DNN Correspondence May Change . . . . . . . . . . . . . . . . . . . . . . . . 233 5.481. 2.C.2.26. Operator Failures Can Leave a Mixed Session State . . . . . . . . . . . . . . . . . . . . . . . . . 233 5.482. 2.C.2.27. A Retry Can Race with the Original Operation . . . . . . . . . . . . . . . . . . . . . . . 234 5.483. 2.C.2.28. Resource Cleanup May Depend upon a New Path Being Established . . . . . . . . . . . . . . . . . . . 234 5.484. 2.C.2.29. Delayed Cleanup May Be Legitimate . . . . . . 234 5.485. 2.C.2.30. Session Continuity and Charging Continuity Are Not Identical . . . . . . . . . . . . . . . . . . . . . 234 Das Expires 3 May 2027 [Page 17] Internet-Draft Telecom Session Operational Consistency October 2026 5.486. 2.C.2.31. Local Breakout and Home-Routed Session Charging May Follow Different Paths . . . . . . . . . . . . . . 235 5.487. 2.C.2.32. A Remote Release May Be Necessary Even after Service Migration . . . . . . . . . . . . . . . . . . . 235 5.488. 2.C.2.33. A New Registration Does Not Automatically Establish Existing Session Continuity . . . . . . . . . 235 5.489. 2.C.2.34. An Apparently Consistent API State Can Conceal Resource Contradiction . . . . . . . . . . . . . . . . 235 5.490. 2.C.2.35. Reconstruction Must Respect Interoperator Information Boundaries . . . . . . . . . . . . . . . . 236 5.491. 2.C.2.36. A Session-State Reconstruction Does Not Grant Authority to Modify the Network . . . . . . . . . . . . 236 5.492. 2.C.3. Specific Technical Contribution Sought . . . . . 236 5.493. 2.C.4. Representative System Architecture . . . . . . . 237 5.494. 2.C.4.1. Logical Session Identity Resolver . . . . . . 237 5.495. 2.C.4.2. Roaming Architecture Classifier . . . . . . . 237 5.496. 2.C.4.3. Operator Responsibility Model . . . . . . . . 238 5.497. 2.C.4.4. Local Session Reference Mapper . . . . . . . . 238 5.498. 2.C.4.5. Mobility Transition Detector . . . . . . . . . 238 5.499. 2.C.4.6. Procedure Capability Evaluator . . . . . . . . 239 5.500. 2.C.4.7. Interoperator Evidence Collector . . . . . . . 239 5.501. 2.C.4.8. Source-State Reconstruction Component . . . . 239 5.502. 2.C.4.9. Target-State Reconstruction Component . . . . 239 5.503. 2.C.4.10. Control-Plane Operation Tracker . . . . . . . 239 5.504. 2.C.4.11. User-Plane Path Correspondence Evaluator . . 239 5.505. 2.C.4.12. Service Continuity Observer . . . . . . . . . 240 5.506. 2.C.4.13. Cleanup and Residual-State Evaluator . . . . 240 5.507. 2.C.4.14. Cross-Operator Revision Repository . . . . . 240 5.508. 2.C.4.15. Uncertainty and Contradiction Evaluator . . . 240 5.509. 2.C.4.16. Transition Result Generator . . . . . . . . . 240 5.510. 2.C.4.17. Optional Existing Effectuation Interface . . 240 5.511. 2.C.5. Necessary Embodiment-Specific Interpretations . 241 5.512. 2.C.5.1. Interoperator Session Correspondence . . . . . 241 5.513. 2.C.5.2. Responsibility Correspondence . . . . . . . . 241 5.514. 2.C.5.3. Serving-Context Transition . . . . . . . . . . 241 5.515. 2.C.5.4. Source Context . . . . . . . . . . . . . . . . 241 5.516. 2.C.5.5. Target Context . . . . . . . . . . . . . . . . 241 5.517. 2.C.5.6. Local-Context Release . . . . . . . . . . . . 241 5.518. 2.C.5.7. Session Continuity Assessment . . . . . . . . 242 5.519. 2.C.5.8. Residual Serving Context . . . . . . . . . . . 242 5.520. 2.C.6. Representative Data Structures . . . . . . . . . 242 5.521. 2.C.6.1. Roaming Session Record . . . . . . . . . . . . 242 5.522. 2.C.6.2. Operator Responsibility Record . . . . . . . . 242 5.523. 2.C.6.3. Cross-Operator Correspondence Record . . . . . 243 5.524. 2.C.6.4. Mobility Transition Record . . . . . . . . . . 243 5.525. 2.C.6.5. Interoperator Operation Evidence . . . . . . . 243 5.526. 2.C.6.6. User-Plane Resource Correspondence . . . . . . 243 5.527. 2.C.6.7. Transition State Reconstruction . . . . . . . 244 Das Expires 3 May 2027 [Page 18] Internet-Draft Telecom Session Operational Consistency October 2026 5.528. 2.C.6.8. Final Interoperator Continuity Result . . . . 244 5.529. 2.C.7. Detailed Operational Procedure . . . . . . . . . 244 5.530. 2.C-01 - Receive a Roaming or Serving-Context Transition Event . . . . . . . . . . . . . . . . . . . . . . . . . 244 5.531. 2.C-02 - Resolve the Logical Session . . . . . . . . . . 244 5.532. 2.C-03 - Determine the Roaming Architecture . . . . . . 245 5.533. 2.C-04 - Identify the Home Operator Context . . . . . . 245 5.534. 2.C-05 - Identify the Serving or Visited Operator Context . . . . . . . . . . . . . . . . . . . . . . . . 245 5.535. 2.C-06 - Resolve the Applicable Session-Management Functions . . . . . . . . . . . . . . . . . . . . . . . 245 5.536. 2.C-07 - Resolve Function-Local Session References . . . 245 5.537. 2.C-08 - Establish Pre-Transition Resource State . . . . 246 5.538. 2.C-09 - Establish Governing Service Conditions . . . . 246 5.539. 2.C-10 - Identify the Mobility Trigger and Procedure . . 246 5.540. 2.C-11 - Evaluate Procedure Capability Support . . . . . 246 5.541. 2.C-12 - Determine the Intended Logical Session Effect . . . . . . . . . . . . . . . . . . . . . . . . 246 5.542. 2.C-13 - Determine Required Source and Target Functions . . . . . . . . . . . . . . . . . . . . . . . 247 5.543. 2.C-14 - Determine Required Target Resources . . . . . . 247 5.544. 2.C-15 - Determine Source Resource Retention Requirements . . . . . . . . . . . . . . . . . . . . . 247 5.545. 2.C-16 - Determine Cleanup Requirements . . . . . . . . 247 5.546. 2.C-17 - Identify Outstanding Transition Operations . . 247 5.547. 2.C-18 - Evaluate Source and Target State Compatibility . . . . . . . . . . . . . . . . . . . . . 247 5.548. 2.C-19 - Evaluate Cross-Operator Mapping . . . . . . . . 248 5.549. 2.C-20 - Evaluate Source-Specific Versions and Event Ordering . . . . . . . . . . . . . . . . . . . . . . . 248 5.550. 2.C-21 - Evaluate Resource-Continuity Dependencies . . . 248 5.551. 2.C-22 - Evaluate Service-Continuity Requirements . . . 248 5.552. 2.C-23 - Construct Transition-State Possibilities . . . 248 5.553. 2.C-24 - Determine Technical Transition Applicability . 248 5.554. 2.C-25 - Associate Required Network Operations with Existing Controls . . . . . . . . . . . . . . . . . . . 249 5.555. 2.C-26 - Observe Local Operation Submission . . . . . . 249 5.556. 2.C-27 - Interpret Receiver Acknowledgement . . . . . . 249 5.557. 2.C-28 - Reconcile Remote Unknown Outcomes . . . . . . . 249 5.558. 2.C-29 - Observe Home-Side Session State . . . . . . . . 249 5.559. 2.C-30 - Observe Visited-Side Session State . . . . . . 250 5.560. 2.C-31 - Observe Target User-Plane State . . . . . . . . 250 5.561. 2.C-32 - Observe Source User-Plane State . . . . . . . . 250 5.562. 2.C-33 - Evaluate Logical Session Continuity . . . . . . 250 5.563. 2.C-34 - Evaluate Service Continuity Separately . . . . 250 5.564. 2.C-35 - Reconcile Local-Context Release . . . . . . . . 250 5.565. 2.C-36 - Reconcile Full Session Release Where Applicable . . . . . . . . . . . . . . . . . . . . . . 251 Das Expires 3 May 2027 [Page 19] Internet-Draft Telecom Session Operational Consistency October 2026 5.566. 2.C-37 - Identify Residual Earlier Resources . . . . . . 251 5.567. 2.C-38 - Reconcile Accounting Continuity References . . 251 5.568. 2.C-39 - Identify Contradictory or Missing Evidence . . 251 5.569. 2.C-40 - Revise the Assessment after Material Updates . 251 5.570. 2.C-41 - Preserve the Transition Reconstruction History . . . . . . . . . . . . . . . . . . . . . . . . 252 5.571. 2.C-42 - Produce the Interoperator Session Continuity Result . . . . . . . . . . . . . . . . . . . . . . . . 252 5.572. 2.C.8. Technical Invariants . . . . . . . . . . . . . . 252 5.573. C2-I01 - Roaming does not universally imply one specific session-management architecture. . . . . . . . . . . . 252 5.574. C2-I02 - Home-routed and local-breakout session responsibilities must not be conflated. . . . . . . . . 252 5.575. C2-I04 - The presence of a V-SMF depends upon the applicable architecture and procedure. . . . . . . . . 252 5.576. C2-I07 - A serving-network change does not automatically prove logical session replacement. . . . . . . . . . . 252 5.577. C2-I12 - Network-function replacement does not universally guarantee session preservation. . . . . . . . . . . . . 253 5.578. C2-I14 - A home-side status does not automatically establish every visited-side resource state. . . . . . 253 5.579. C2-I20 - Resource replacement does not automatically constitute a new billable session. . . . . . . . . . . 253 5.580. C2-I26 - Source-specific revision numbers are not globally comparable without adequate mapping. . . . . . . . . . 254 5.581. C2-I32 - Hidden state shall not be invented merely to complete a uniform session record. . . . . . . . . . . 254 5.582. C2-I33 - An unknown mandatory state condition cannot be silently treated as compatible. . . . . . . . . . . . . 254 5.583. C2-I35 - Multiple possible resulting states may remain after incomplete remote operations. . . . . . . . . . . 254 5.584. C2-I38 - Existing standardized mobility procedures are not newly invented by the reconstruction. . . . . . . . . . 254 5.585. C2-I42 - Operator-local accounting completion does not necessarily establish interoperator settlement. . . . . 255 5.586. C2-I46 - An authorized operation may become technically inapplicable following a state change. . . . . . . . . 255 5.587. 2.C.9. Embodiment-Specific Mathematical Formulation . . 255 5.588. 2.C.9.1. Logical Session and Operator Contexts . . . . 255 5.589. 2.C.9.2. Architecture-Dependent Responsibility . . . . 256 5.590. 2.C.9.3. Interoperator Identity Correspondence . . . . 256 5.591. 2.C.9.4. Transition State Vector . . . . . . . . . . . 256 5.592. 2.C.9.5. Procedure Applicability . . . . . . . . . . . 257 5.593. 2.C.9.6. Capability-Dependent Transition . . . . . . . 257 5.594. 2.C.9.7. Resource Transition Sequence . . . . . . . . . 257 5.595. 2.C.9.8. Unknown Remote Outcome . . . . . . . . . . . . 258 5.596. 2.C.9.9. Session Continuity Predicate . . . . . . . . . 258 5.597. 2.C.9.10. Service Continuity Predicate . . . . . . . . 258 Das Expires 3 May 2027 [Page 20] Internet-Draft Telecom Session Operational Consistency October 2026 5.598. 2.C.9.11. Cleanup Predicate . . . . . . . . . . . . . . 259 5.599. 2.C.9.12. Source-Qualified State Versions . . . . . . . 259 5.600. 2.C.9.13. Time Uncertainty . . . . . . . . . . . . . . 259 5.601. 2.C.9.14. Cross-Domain Correspondence Result . . . . . 260 5.602. 2.C.9.15. Illustration - Two Possible Remote States . . 260 5.603. 2.C.9.16. Illustration - Scope of Context Release . . . 260 5.604. 2.C.10. Implementable Pseudocode - C-ALG-03 . . . . . . 261 5.605. 2.C.10.1. Technical Types . . . . . . . . . . . . . . . 261 5.606. 2.C.10.2. Classify the Roaming Architecture . . . . . . 261 5.607. 2.C.10.3. Construct Responsibility Model . . . . . . . 262 5.608. 2.C.10.4. Resolve Cross-Operator Session Identity . . . 263 5.609. 2.C.10.5. Resolve the Applicable Mobility Procedure . . 264 5.610. 2.C.10.6. Model Source and Target Resource Dependencies . . . . . . . . . . . . . . . . . . . . . 264 5.611. 2.C.10.7. Evaluate Transition Applicability . . . . . . 265 5.612. 2.C.10.8. Reconcile Asynchronous Interoperator Operations . . . . . . . . . . . . . . . . . . . . . . 266 5.613. 2.C.10.9. Distinguish Local Context Release from Full Release . . . . . . . . . . . . . . . . . . . . . . . . 267 5.614. 2.C.10.10. Evaluate Source and Target Resource Cleanup . . . . . . . . . . . . . . . . . . . . . . . . 267 5.615. 2.C.10.11. Evaluate Logical and Service Continuity . . 268 5.616. 2.C.10.12. Reconstruct Final Interoperator State . . . 269 5.617. 2.C.11. Worked Technical Examples . . . . . . . . . . . 270 5.618. 2.C.11.1. Example 1 - Home-Routed Session with Different Local References . . . . . . . . . . . . . . . . . . . 271 5.619. 2.C.11.2. Example 2 - Local Breakout without a Home-Routed SMF Pair . . . . . . . . . . . . . . . . . 271 5.620. 2.C.11.3. Example 3 - V-SMF Change Supported . . . . . 271 5.621. 2.C.11.4. Example 4 - V-SMF Change Unsupported . . . . 272 5.622. 2.C.11.5. Example 5 - Target Resource Established, Source Still Present . . . . . . . . . . . . . . . . . . . . . 272 5.623. 2.C.11.6. Example 6 - Source Released Before Target Becomes Available . . . . . . . . . . . . . . . . . . . 272 5.624. 2.C.11.7. Example 7 - Lost Interoperator Update Response . . . . . . . . . . . . . . . . . . . . . . . 273 5.625. 2.C.11.8. Example 8 - Local Context Release without Full Session Termination . . . . . . . . . . . . . . . . . . 273 5.626. 2.C.11.9. Example 9 - Interoperator Clock Difference . 273 5.627. 2.C.11.10. Example 10 - Different Revision Namespaces . . . . . . . . . . . . . . . . . . . . . . 274 5.628. 2.C.11.11. Example 11 - Function Replacement with Logical Continuity . . . . . . . . . . . . . . . . . . . . . . 274 5.629. 2.C.11.12. Example 12 - Function Replacement Requiring Release . . . . . . . . . . . . . . . . . . . . . . . . 274 5.630. 2.C.11.13. Example 13 - Home-Routed Access Transition . . . . . . . . . . . . . . . . . . . . . . 275 Das Expires 3 May 2027 [Page 21] Internet-Draft Telecom Session Operational Consistency October 2026 5.631. 2.C.11.14. Example 14 - Application Recovering through a New Session . . . . . . . . . . . . . . . . . . . . . . 275 5.632. 2.C.11.15. Example 15 - Logical Session Persists but QoS Changes . . . . . . . . . . . . . . . . . . . . . . . . 275 5.633. 2.C.11.16. Example 16 - Home Status Present, Visited Resource Unknown . . . . . . . . . . . . . . . . . . . 276 5.634. 2.C.11.17. Example 17 - Charging Reference Continues across Resource Change . . . . . . . . . . . . . . . . 276 5.635. 2.C.11.18. Example 18 - Home-Routed Session with Supported Visited Breakout . . . . . . . . . . . . . . 276 5.636. 2.C.11.19. Example 19 - Target Status Conflicts with Resource Evidence . . . . . . . . . . . . . . . . . . . 277 5.637. 2.C.11.20. Example 20 - Remote Operator Temporarily Unreachable . . . . . . . . . . . . . . . . . . . . . . 277 5.638. 2.C.12. Specific Design-Around Alternatives and Implementation Pathways . . . . . . . . . . . . . . . . 277 5.639. C-2-DA-01 - Centralized Interoperator Reconciliation Service . . . . . . . . . . . . . . . . . . . . . . . . 277 5.640. C-2-DA-02 - Federated Operator-Local Reconstruction . . 278 5.641. C-2-DA-03 - Home-Network-Centric Continuity Reconstruction . . . . . . . . . . . . . . . . . . . . 278 5.642. C-2-DA-04 - Visited-Network-Centric Transition Reconstruction . . . . . . . . . . . . . . . . . . . . 279 5.643. C-2-DA-05 - Home-Routed Architecture-Specific Model Mechanism: The processor uses the actual home-routed session-management and user-plane . . . . . . . . . . . 279 5.644. C-2-DA-06 - Local-Breakout Architecture-Specific Model . . . . . . . . . . . . . . . . . . . . . . . . . 279 5.645. C-2-DA-07 - Home-Routed Breakout Feature Model . . . . . 280 5.646. C-2-DA-08 - Standards-Procedure-Driven Responsibility Mapping . . . . . . . . . . . . . . . . . . . . . . . . 280 5.647. C-2-DA-09 - Operator-Local Reference Mapping . . . . . . 281 5.648. C-2-DA-10 - Privacy-Minimized Session Correspondence . . 281 5.649. C-2-DA-11 - Event-Sourced Cross-Operator State Reconstruction . . . . . . . . . . . . . . . . . . . . 281 5.650. C-2-DA-12 - Snapshot-and-Delta Reconciliation Mechanism: Operator snapshots are combined with subsequent qualified changes. . . . . . . . . . . . . . . . . . . . . . . . 282 5.651. C-2-DA-13 - Relational Session Correspondence Repository . . . . . . . . . . . . . . . . . . . . . . 282 5.652. C-2-DA-14 - Graph-Based Responsibility Reconstruction . 282 5.653. C-2-DA-15 - Constraint-Based Multi-Domain State Solver . . . . . . . . . . . . . . . . . . . . . . . . 283 5.654. C-2-DA-16 - State-Version-Aware Cross-Domain Processing . . . . . . . . . . . . . . . . . . . . . . 283 5.655. C-2-DA-17 - Interval-Based Event-Time Reconstruction . . 284 5.656. C-2-DA-18 - Causal Message-Dependency Reconstruction . . 284 Das Expires 3 May 2027 [Page 22] Internet-Draft Telecom Session Operational Consistency October 2026 5.657. C-2-DA-19 - Native Nsmf_PDUSession Status Reconciliation . . . . . . . . . . . . . . . . . . . . 284 5.658. C-2-DA-20 - Lost-Response Remote Outcome Reconstruction . . . . . . . . . . . . . . . . . . . . 285 5.659. C-2-DA-21 - Receiver-Native Idempotency and Retry Handling . . . . . . . . . . . . . . . . . . . . . . . 285 5.660. C-2-DA-22 - Resource-State-Based Session Transition Verification . . . . . . . . . . . . . . . . . . . . . 285 5.661. C-2-DA-23 - Transitional Source-and-Target Resource Coexistence . . . . . . . . . . . . . . . . . . . . . . 286 5.662. C-2-DA-24 - Dependency-Directed Resource Release Mechanism: Source cleanup depends upon the required target state or other specified . . . . . . . . . . . . . . . 286 5.663. C-2-DA-25 - Local-Context Release Versus Full-Release Distinction . . . . . . . . . . . . . . . . . . . . . . 287 5.664. C-2-DA-26 - Access-Transition Session Correspondence . . 287 5.665. C-2-DA-27 - Function-Generation-Aware Continuity . . . . 287 5.666. C-2-DA-28 - Session Replacement Versus Continuity Classifier . . . . . . . . . . . . . . . . . . . . . . 288 5.667. C-2-DA-29 - QoS-Scoped Continuity Evaluation . . . . . . 288 5.668. C-2-DA-30 - Slice- and DNN-Specific Correspondence . . . 289 5.669. C-2-DA-31 - Partial Operator-Outage Reconstruction . . . 289 5.670. C-2-DA-32 - Residual Context and Resource Cleanup Monitoring . . . . . . . . . . . . . . . . . . . . . . 289 5.671. C-2-DA-33 - Accounting-Reference Continuity . . . . . . 290 5.672. C-2-DA-34 - Read-Only Independent Transition Verifier . 290 5.673. C-2-DA-35 - Integrity-Protected Interoperator Evidence . . . . . . . . . . . . . . . . . . . . . . . 291 5.674. C-2-DA-36 - Optional Hardware Observation and Hybrid State Optimization . . . . . . . . . . . . . . . . . . . . . 291 5.675. 2.C.13. Specific Technical Design-Around Correspondence . . . . . . . . . . . . . . . . . . . . 292 5.676. 2.C.14. PHOSITA Reference Implementation Architecture . . . . . . . . . . . . . . . . . . . . . 293 5.677. 2.C.15. Detailed PHOSITA Implementation Procedure . . . 295 5.678. 2.C.16. Failure and Adversarial Conditions F1 - Wrong roaming architecture selected: Responsibility model corrected or left . . . . . . . . . . . . . . . . . . . 299 5.679. F2 - LBO session falsely assigned an H-SMF/V-SMF pair: Architecture mismatch . . . . . . . . . . . . . . . . . 299 5.680. F3 - HR breakout variation treated as conventional LBO: Procedure distinction . . . . . . . . . . . . . . . . . 299 5.681. F5 - Home and visited references lack supported correspondence: Logical identity . . . . . . . . . . . 299 5.682. F28 - Application remains reachable through new session: Logical replacement . . . . . . . . . . . . . . . . . . 301 5.683. F43 - Resource change occurs after a prior assessment: Current applicability . . . . . . . . . . . . . . . . . 302 Das Expires 3 May 2027 [Page 23] Internet-Draft Telecom Session Operational Consistency October 2026 5.684. 2.C.17. Representative Proposed Test Suite . . . . . . 302 5.685. Test . . . . . . . . . . . . . . . . . . . . . . . . . . 302 5.686. Controlled scenario Expected technical behavior . . . . 302 5.687. ID . . . . . . . . . . . . . . . . . . . . . . . . . . . 302 5.688. 2.C.17.1. Proposed Test Evidence . . . . . . . . . . . 310 5.689. 2.C.18. Standards and Established Technology Correspondence . . . . . . . . . . . . . . . . . . . . 311 5.690. 2.C.18.6. Existing Roaming Agreements and Operator Procedures . . . . . . . . . . . . . . . . . . . . . . 312 5.691. 2.C.18.7. Other Telecommunications Environments . . . . 313 5.692. 2.C.19. Specific Claim-Supporting Relationships . . . . 313 5.693. Relationship 1 - Architecture-qualified responsibility mapping: Determining the . . . . . . . . . . . . . . . 313 5.694. Relationship 6 - Asynchronous remote-outcome reconciliation: Retaining unknown . . . . . . . . . . . 314 5.695. Relationship 7 - Source/target transitional resource correspondence: Evaluating . . . . . . . . . . . . . . 314 5.696. 2.C.20. Relation to the Foundational Shared Technical Foundation . . . . . . . . . . . . . . . . . . . . . . 315 5.697. 2.C.21. Particular Technical Effects . . . . . . . . . 316 5.698. 2.C.22. Non-Limiting Implementation Character . . . . . 317 5.699. 2.C.23. Conclusion . . . . . . . . . . . . . . . . . . 318 5.700. This completes Embodiment 2.C without repeating the established 3GPP roaming . . . . . . . . . . . . . . . 318 5.701. EMBODIMENT 3.C - CONCURRENT PROGRAMMABLE TELECOMMUNICATIONS SESSION MODIFICATION, RESOURCE- . . 319 5.702. RESERVATION CORRESPONDENCE, AND USAGE-QUOTA STATE RECONSTRUCTION . . . . . . . . . . . . . . . . . . . . 319 5.703. 3.C.1. Embodiment Identification and Technical Scope . 319 5.704. Related Embodiments: . . . . . . . . . . . . . . . . . . 319 5.705. Question A - Which operation was requested? . . . . . . 321 5.706. Question B - Which operation actually took effect? . . . 321 5.707. Question C - What is the session's currently supportable service state? . . . . . . . . . . . . . . . . . . . . 321 5.708. Question D - Which reserved or allocated quantities remain attributable to the session? . . . . . . . . . . . . . 321 5.709. Question E - What usage can be established without double counting? . . . . . . . . . . . . . . . . . . . . . . . 321 5.710. 3.C.2. Particular Technical Problem Space . . . . . . . 323 5.711. 3.C.2.1. Concurrent Extension Requests Can Be Misinterpreted . . . . . . . . . . . . . . . . . . . . 323 5.712. 3.C.2.2. Request Arrival Order Is Not Necessarily Application Order . . . . . . . . . . . . . . . . . . . 323 5.713. 3.C.2.3. Extension Duration May Be Capped . . . . . . . 323 5.714. 3.C.2.4. Session Expiry Can Race with Extension . . . . 323 5.715. 3.C.2.5. Deletion Can Race with Extension . . . . . . . 324 5.716. 3.C.2.6. Network-Initiated Termination May Precede Resource Cleanup . . . . . . . . . . . . . . . . . . . 324 Das Expires 3 May 2027 [Page 24] Internet-Draft Telecom Session Operational Consistency October 2026 5.717. 3.C.2.7. A Client Correlation Reference Is Not Necessarily an Idempotency Key . . . . . . . . . . . . 324 5.718. 3.C.2.8. Identical Requests May Have Different Results . . . . . . . . . . . . . . . . . . . . . . . . 325 5.719. 3.C.2.9. Different Requests May Produce the Same Final Value . . . . . . . . . . . . . . . . . . . . . . . . . 325 5.720. 3.C.2.10. Several API Sessions May Depend on Shared Resources . . . . . . . . . . . . . . . . . . . . . . . 325 5.721. 3.C.2.11. Resource Reservation Is Not Resource Installation . . . . . . . . . . . . . . . . . . . . . 325 5.722. 3.C.2.12. Resource Installation Is Not Actual Usage . . 326 5.723. 3.C.2.13. Reserved Amounts and Consumed Amounts May Overlap . . . . . . . . . . . . . . . . . . . . . . . . 326 5.724. 3.C.2.14. Reservations May Be Scoped to Different Resources . . . . . . . . . . . . . . . . . . . . . . . 326 5.725. 3.C.2.15. Quota Grants Can Be Superseded or Adjusted . 326 5.726. 3.C.2.16. Thresholds and Quotas Have Different Meanings . . . . . . . . . . . . . . . . . . . . . . . 327 5.727. 3.C.2.17. Usage Counters May Be Cumulative . . . . . . 327 5.728. 3.C.2.18. Usage Reports May Contain Independent Increments . . . . . . . . . . . . . . . . . . . . . . 327 5.729. 3.C.2.19. Usage Reports May Be Replayed . . . . . . . . 327 5.730. 3.C.2.20. Different Usage Reports May Cover Overlapping Traffic . . . . . . . . . . . . . . . . . . . . . . . . 328 5.731. 3.C.2.21. Counters May Reset or Wrap . . . . . . . . . 328 5.732. 3.C.2.22. Resource Relocation May Change Measurement Source . . . . . . . . . . . . . . . . . . . . . . . . 328 5.733. 3.C.2.23. Usage Records May Arrive after Session Deletion . . . . . . . . . . . . . . . . . . . . . . . 328 5.734. 3.C.2.24. Reservation Release May Occur before Final Usage Arrives . . . . . . . . . . . . . . . . . . . . . 329 5.735. 3.C.2.25. Concurrent Reservations May Refer to the Same Capacity . . . . . . . . . . . . . . . . . . . . . . . 329 5.736. 3.C.2.26. Application Session Identity and Network Resource Identity Differ . . . . . . . . . . . . . . . 329 5.737. 3.C.2.27. Flow Identity Can Change . . . . . . . . . . 329 5.738. 3.C.2.28. Subscriber and Service Context Can Change during Concurrent Updates . . . . . . . . . . . . . . . 330 5.739. 3.C.2.29. API Availability State May Differ from Observed Network Behavior . . . . . . . . . . . . . . . . . . . 330 5.740. 3.C.2.30. A Late Status Event May Describe an Earlier State . . . . . . . . . . . . . . . . . . . . . . . . . 330 5.741. 3.C.2.31. The Same Resource Can Serve Different Accounting Populations . . . . . . . . . . . . . . . . 330 5.742. 3.C.2.32. Accounting Records May Be Corrected . . . . . 331 5.743. 3.C.2.33. A Reconciliation Failure Is Not Proof of Quota Violation . . . . . . . . . . . . . . . . . . . . . . . 331 Das Expires 3 May 2027 [Page 25] Internet-Draft Telecom Session Operational Consistency October 2026 5.744. 3.C.2.34. An Established Quota Violation Does Not Resolve Session Lifecycle . . . . . . . . . . . . . . . . . . . 331 5.745. 3.C.2.35. Accounted Usage Does Not Necessarily Equal Billed Usage . . . . . . . . . . . . . . . . . . . . . 331 5.746. 3.C.2.36. A Technical Reconstruction Does Not Independently Authorize Additional Resource Use . . . . 332 5.747. 3.C.3. Specific Technical Contribution Sought . . . . . 332 5.748. 3.C.4. Representative System Components . . . . . . . . 333 5.749. 3.C.4.1. Programmable Session Identity Resolver . . . . 333 5.750. 3.C.4.2. Session Operation Intake . . . . . . . . . . . 333 5.751. 3.C.4.3. Concurrent Operation Correlator . . . . . . . 333 5.752. 3.C.4.4. API Contract Interpreter . . . . . . . . . . . 333 5.753. 3.C.4.5. Session Revision Resolver . . . . . . . . . . 334 5.754. 3.C.4.6. Operation Status Reconciler . . . . . . . . . 334 5.755. 3.C.4.7. Session Expiry and Termination Evaluator . . . 334 5.756. 3.C.4.8. Resource Correspondence Repository . . . . . . 334 5.757. 3.C.4.9. Reservation State Collector . . . . . . . . . 334 5.758. 3.C.4.10. Quota and Threshold Semantics Evaluator . . . 335 5.759. 3.C.4.11. Usage Report Collector . . . . . . . . . . . 335 5.760. 3.C.4.12. Usage Lineage Evaluator . . . . . . . . . . . 335 5.761. 3.C.4.13. Counter Generation Reconciler . . . . . . . . 335 5.762. 3.C.4.14. Temporal Coverage Evaluator . . . . . . . . . 335 5.763. 3.C.4.15. Accounting State Reconstructor . . . . . . . 335 5.764. 3.C.4.16. Resource Cleanup Evaluator . . . . . . . . . 336 5.765. 3.C.4.17. Reconciliation Revision Manager . . . . . . . 336 5.766. 3.C.4.18. Evidence and State Repository . . . . . . . . 336 5.767. 3.C.4.19. Optional Independent Effectuation Interface . . . . . . . . . . . . . . . . . . . . . . . 336 5.768. 3.C.5. Necessary Embodiment-Specific Technical Interpretations . . . . . . . . . . . . . . . . . . . . 336 5.769. 3.C.6. Representative Data Structures . . . . . . . . . 337 5.770. 3.C.6.1. Programmable Session Context . . . . . . . . . 337 5.771. 3.C.6.2. Concurrent Session Operation . . . . . . . . . 338 5.772. 3.C.6.3. Operation Conflict Record . . . . . . . . . . 338 5.773. 3.C.6.4. Resource Allocation Record . . . . . . . . . . 338 5.774. 3.C.6.5. Reservation State Record . . . . . . . . . . . 338 5.775. 3.C.6.6. Usage Measurement Record . . . . . . . . . . . 339 5.776. 3.C.6.7. Usage Reconciliation State . . . . . . . . . . 339 5.777. 3.C.6.8. Session and Quota Reconstruction Result . . . 339 5.778. 3.C.7. Detailed Operational Procedure . . . . . . . . . 339 5.779. 3.C-01 - Identify the Session . . . . . . . . . . . . . 340 5.780. 3.C-02 - Resolve Underlying Resource Correspondence . . 340 5.781. 3.C-03 - Establish the Initial Effective Session State . . . . . . . . . . . . . . . . . . . . . . . . . 340 5.782. 3.C-04 - Identify Relevant Reservation and Accounting Scopes . . . . . . . . . . . . . . . . . . . . . . . . 340 5.783. 3.C-05 - Acquire the Concurrent Operation Set . . . . . 340 5.784. 3.C-06 - Qualify Original Request Identity . . . . . . . 340 Das Expires 3 May 2027 [Page 26] Internet-Draft Telecom Session Operational Consistency October 2026 5.785. 3.C-07 - Identify Retries and Duplicate Deliveries . . . 341 5.786. 3.C-08 - Identify Possible Operation Overlap . . . . . . 341 5.787. 3.C-09 - Establish Supported Ordering Constraints . . . 341 5.788. 3.C-10 - Determine the Applicable API Semantics . . . . 341 5.789. 3.C-11 - Evaluate Extension Starting-State Conditions . 341 5.790. 3.C-12 - Evaluate Duration Computation . . . . . . . . . 341 5.791. 3.C-13 - Evaluate Session Expiry Interaction . . . . . . 342 5.792. 3.C-14 - Evaluate Deletion or Termination Interaction . 342 5.793. 3.C-15 - Identify Receiver Responses . . . . . . . . . . 342 5.794. 3.C-16 - Reconcile Unknown Remote Operation Outcomes . . 342 5.795. 3.C-17 - Reconstruct Possible Effective Session Revisions . . . . . . . . . . . . . . . . . . . . . . . 342 5.796. 3.C-18 - Identify Session-to-Resource Dependencies . . . 342 5.797. 3.C-19 - Identify Shared Resources . . . . . . . . . . . 343 5.798. 3.C-20 - Retrieve Reservation Grants . . . . . . . . . . 343 5.799. 3.C-21 - Qualify Grant Semantics . . . . . . . . . . . . 343 5.800. 3.C-22 - Identify Reporting Thresholds Separately . . . 343 5.801. 3.C-23 - Associate Reservations with Session and Resource Scope . . . . . . . . . . . . . . . . . . . . . . . . . 343 5.802. 3.C-24 - Retrieve Resource Application Evidence . . . . 343 5.803. 3.C-25 - Acquire Usage Reports . . . . . . . . . . . . . 343 5.804. 3.C-26 - Identify Measurement Types and Units . . . . . 344 5.805. 3.C-27 - Identify Report Duplicates and Corrections . . 344 5.806. 3.C-28 - Reconcile Counter Generations . . . . . . . . . 344 5.807. 3.C-29 - Reconcile Usage Time Windows . . . . . . . . . 344 5.808. 3.C-30 - Reconcile Resource Relocation Effects . . . . . 344 5.809. 3.C-31 - Derive Supported Usage Increments . . . . . . . 344 5.810. 3.C-32 - Distinguish Consumed and Reserved Quantities . 345 5.811. 3.C-33 - Evaluate Residual Reservations . . . . . . . . 345 5.812. 3.C-34 - Evaluate Shared-Resource Accounting . . . . . . 345 5.813. 3.C-35 - Reconcile Session Closure with Resources . . . 345 5.814. 3.C-36 - Reconcile Late Usage Reports . . . . . . . . . 345 5.815. 3.C-37 - Identify Outstanding Accounting Records . . . . 345 5.816. 3.C-38 - Evaluate Mandatory State Constraints . . . . . 346 5.817. 3.C-39 - Classify the Reconstruction . . . . . . . . . . 346 5.818. 3.C-40 - Determine Additional Evidence Requirements . . 346 5.819. 3.C-41 - Process Material Late or Corrected Evidence . . 346 5.820. 3.C-42 - Recalculate Dependent State Only . . . . . . . 346 5.821. 3.C-43 - Preserve the Reconstructible History . . . . . 346 5.822. 3.C-44 - Produce the Session and Usage Correspondence Result . . . . . . . . . . . . . . . . . . . . . . . . 347 5.823. 3.C.8. Technical Invariants . . . . . . . . . . . . . . 347 5.824. C3-I03 - A granted overall duration may differ from the requested additional duration. . . . . . . . . . . . . 347 5.825. C3-I04 - An applicable profile maximum must be interpreted under the receiver's actual contract. . . . . . . . . . 347 5.826. C3-I09 - A request correlation identifier is not automatically an idempotency guarantee. . . . . . . . . 347 Das Expires 3 May 2027 [Page 27] Internet-Draft Telecom Session Operational Consistency October 2026 5.827. C3-I18 - A provisioned resource is not proof that its entire reserved amount was consumed. . . . . . . . . . 348 5.828. C3-I21 - Reservation and consumption may overlap according to their accounting semantics. . . . . . . . . . . . . 348 5.829. C3-I30 - Overlapping measurement intervals do not automatically represent independent usage. . . . . . . 349 5.830. C3-I45 - Source-scoped revisions must not be globally ordered without supporting evidence. . . . . . . . . . 350 5.831. C3-I46 - Multiple possible resulting states must be preserved where a material operation outcome is unknown. . . . . . . . . . . . . . . . . . . . . . . . 350 5.832. C3-I47 - A mandatory false condition establishes inconsistency even when other conditions are unresolved. . . . . . . . . . . . . . . . . . . . . . . 350 5.833. 3.C.9. Embodiment-Specific Mathematical Formulation . . 350 5.834. 3.C.9.1. Session State Representation . . . . . . . . . 350 5.835. 3.C.9.2. Concurrent Operations . . . . . . . . . . . . 351 5.836. 3.C.9.3. Extension under a Defined Duration Model . . . 351 5.837. 3.C.9.4. Noncommutative Session Operations . . . . . . 351 5.838. 3.C.9.5. Possible Resulting Session States . . . . . . 352 5.839. 3.C.9.6. Reservation and Consumption . . . . . . . . . 352 5.840. 3.C.9.7. Independent Reservation Scope . . . . . . . . 352 5.841. 3.C.9.8. Cumulative Counter Derivation . . . . . . . . 353 5.842. 3.C.9.9. Incremental Usage Aggregation . . . . . . . . 353 5.843. 3.C.9.10. Measurement Coverage . . . . . . . . . . . . 353 5.844. 3.C.9.11. Shared-Resource Attribution . . . . . . . . . 353 5.845. 3.C.9.12. Extension-State Applicability . . . . . . . . 354 5.846. 3.C.9.13. Reconciliation Constraints . . . . . . . . . 354 5.847. 3.C.9.14. Corrections and Revisions . . . . . . . . . . 354 5.848. 3.C.9.15. Worked Duration Example . . . . . . . . . . . 354 5.849. 3.C.9.16. Worked Counter Example . . . . . . . . . . . 355 5.850. 3.C.10. Implementable Pseudocode - C-ALG-04 . . . . . . 355 5.851. 3.C.10.1. Core Types . . . . . . . . . . . . . . . . . 355 5.852. 3.C.10.2. Establish Session Context . . . . . . . . . . 356 5.853. 3.C.10.3. Collect Concurrent Operations . . . . . . . . 356 5.854. 3.C.10.4. Evaluate Extension Semantics . . . . . . . . 357 5.855. 3.C.10.5. Reconstruct Concurrent Effects . . . . . . . 357 5.856. 3.C.10.6. Reconcile Resource Reservations . . . . . . . 358 5.857. 3.C.10.7. Qualify Usage Reports . . . . . . . . . . . . 359 5.858. 3.C.10.8. Derive Usage without Double Counting . . . . 359 5.859. 3.C.10.9. Evaluate Shared-Resource Attribution . . . . 360 5.860. 3.C.10.10. Reconcile Session Closure . . . . . . . . . 361 5.861. 3.C.10.11. Recalculate after Late Corrections . . . . . 361 5.862. 3.C.10.12. Complete Embodiment Algorithm . . . . . . . 362 5.863. 3.C.11. Worked Technical Examples . . . . . . . . . . . 363 5.864. 3.C.11.1. Example 1 - Two Concurrent Extensions with a Maximum Duration . . . . . . . . . . . . . . . . . . . 363 5.865. 3.C.11.2. Example 2 - Extension and Deletion Race . . . 364 Das Expires 3 May 2027 [Page 28] Internet-Draft Telecom Session Operational Consistency October 2026 5.866. 3.C.11.3. Example 3 - Extension Request Near Expiry . . 364 5.867. 3.C.11.4. Example 4 - Successful Extension with Lost Response . . . . . . . . . . . . . . . . . . . . . . . 364 5.868. 3.C.11.5. Example 5 - Duplicate Correlation Header . . 365 5.869. 3.C.11.6. Example 6 - Status REQUESTED versus AVAILABLE . . . . . . . . . . . . . . . . . . . . . . . 365 5.870. 3.C.11.7. Example 7 - Network Termination with Residual Resources . . . . . . . . . . . . . . . . . . . . . . . 365 5.871. 3.C.11.8. Example 8 - Reservation versus Consumption . 365 5.872. 3.C.11.9. Example 9 - Cumulative Counter Reports . . . 366 5.873. 3.C.11.10. Example 10 - Duplicate Usage Report . . . . 366 5.874. 3.C.11.11. Example 11 - Correction Replaces Earlier Usage . . . . . . . . . . . . . . . . . . . . . . . . . 366 5.875. 3.C.11.12. Example 12 - Counter Reset after UPF Restart . . . . . . . . . . . . . . . . . . . . . . . . 366 5.876. 3.C.11.13. Example 13 - Shared Resource, Unknown Session Partition . . . . . . . . . . . . . . . . . . . . . . . 367 5.877. 3.C.11.14. Example 14 - Shared Resource with Known Partition . . . . . . . . . . . . . . . . . . . . . . . 367 5.878. 3.C.11.15. Example 15 - PFCP Threshold and Quota . . . 367 5.879. 3.C.11.16. Example 16 - Session Relocation with Two Reporting Functions . . . . . . . . . . . . . . . . . . 368 5.880. 3.C.11.17. Example 17 - Deleted Session with Late Report . . . . . . . . . . . . . . . . . . . . . . . . 368 5.881. 3.C.11.18. Example 18 - Reservation Released with Usage Pending . . . . . . . . . . . . . . . . . . . . . . . . 368 5.882. 3.C.11.19. Example 19 - Different Measurement Units . . 368 5.883. 3.C.11.20. Example 20 - Concurrent Session Update and Subscriber Change . . . . . . . . . . . . . . . . . . . 369 5.884. 3.C.11.21. Example 21 - Pool Reservation and Independent Allocation . . . . . . . . . . . . . . . . . . . . . . 369 5.885. 3.C.11.22. Example 22 - Resource Cleanup after Network Termination . . . . . . . . . . . . . . . . . . . . . . 369 5.886. 3.C.12. Specific Design-Around Alternatives and Implementation Pathways . . . . . . . . . . . . . . . . 370 5.887. C-3-DA-01 - Centralized Session Reconciliation Mechanism: One service receives session, reservation, and usage records. . . . . . . . . . . . . . . . . . . . . . . . 370 5.888. C-3-DA-02 - Federated Source-Local Reconciliation Mechanism: API provider, resource manager, and accounting functions each reconstruct . . . . . . . . . . . . . . 370 5.889. C-3-DA-03 - Event-Sourced Session Operation Reconstruction . . . . . . . . . . . . . . . . . . . . 370 5.890. C-3-DA-04 - Snapshot-and-Delta Reconstruction . . . . . 371 5.891. C-3-DA-05 - Database Transaction-Based Session Serialization . . . . . . . . . . . . . . . . . . . . . 371 5.892. C-3-DA-06 - Receiver-Native Conditional Update . . . . . 371 5.893. C-3-DA-07 - Optimistic Concurrency Reconstruction . . . 372 Das Expires 3 May 2027 [Page 29] Internet-Draft Telecom Session Operational Consistency October 2026 5.894. C-3-DA-08 - Partial-Order Operation Modeling . . . . . . 372 5.895. C-3-DA-09 - Symbolic State-Envelope Reconstruction Mechanism: Unknown operation outcomes are encoded as constraints. . . . . . . . . . . . . . . . . . . . . . 372 5.896. C-3-DA-10 - API-Contract-Specific Duration Interpreter Mechanism: A versioned API adapter interprets extension semantics. . . . . . . . . . . . . . . . . . . . . . . 373 5.897. C-3-DA-11 - Expiry-Aware Session Reconciliation Mechanism: The processor associates operations with the session's effective expiry state. . . . . . . . . . . . . . . . . 373 5.898. C-3-DA-12 - Delete-versus-Extend Conflict Reconstruction . . . . . . . . . . . . . . . . . . . . 373 5.899. C-3-DA-13 - Native Session Query Reconciliation Mechanism: The processor retrieves the current API session state. 374 5.900. C-3-DA-14 - Provider Notification and Polling Combination Mechanism: Status events are reconciled with session retrieval. . . . . . . . . . . . . . . . . . . . . . . 374 5.901. C-3-DA-15 - Session-Generation-Aware Resource Mapping . 374 5.902. C-3-DA-16 - Shared Resource-Pool Reconciliation . . . . 375 5.903. C-3-DA-17 - Reservation Ledger Reconstruction Mechanism: Existing reservation grant and release records are reconciled. . . . . . . . . . . . . . . . . . . . . . . 375 5.904. C-3-DA-18 - Replacement-versus-Additive Grant Interpretation . . . . . . . . . . . . . . . . . . . . 375 5.905. C-3-DA-19 - PFCP Usage Reporting Rule Mapping . . . . . 376 5.906. C-3-DA-20 - Reporting Threshold-versus-Quota Differentiation . . . . . . . . . . . . . . . . . . . . 376 5.907. C-3-DA-21 - Cumulative Counter Reconstruction Mechanism: Compatible cumulative counter positions are used to derive increments. . . . . . . . . . . . . . . . . . . . . . . 376 5.908. C-3-DA-22 - Interval-Based Usage Aggregation Mechanism: Independent interval increments are combined under a defined partition model. . . . . . . . . . . . . . . . 377 5.909. C-3-DA-23 - Report Identity and Deduplication Mechanism: Source-qualified report references distinguish retransmissions. . . . . . . . . . . . . . . . . . . . 377 5.910. C-3-DA-24 - Correction and Supersession Processing . . . 377 5.911. C-3-DA-25 - Multi-UPF Relocation Usage Reconciliation . 377 5.912. C-3-DA-26 - Flow-Qualified Session Attribution . . . . . 378 5.913. C-3-DA-27 - Quota-Epoch-Aware Reconciliation Mechanism: Grants and measurements are partitioned by source-defined accounting epochs. . . . . . . . . . . . . . . . . . . 378 5.914. C-3-DA-28 - Multi-Unit Reconciliation Mechanism: Time, volume, and event usage are processed as separate dimensions. . . . . . . . . . . . . . . . . . . . . . . 378 5.915. C-3-DA-29 - Late-Report Session Closure . . . . . . . . 379 5.916. C-3-DA-30 - Residual Resource and Reservation Cleanup . 379 Das Expires 3 May 2027 [Page 30] Internet-Draft Telecom Session Operational Consistency October 2026 5.917. C-3-DA-31 - Asynchronous Charging-Record Reconciliation . . . . . . . . . . . . . . . . . . . . 379 5.918. C-3-DA-32 - Read-Only Independent Consistency Monitor . 380 5.919. C-3-DA-33 - Incremental Dependency-Based Reassessment . 380 5.920. C-3-DA-34 - Crash-Resilient Reconciliation . . . . . . . 380 5.921. C-3-DA-35 - Integrity-Protected Reconciliation Evidence . . . . . . . . . . . . . . . . . . . . . . . 381 5.922. C-3-DA-36 - Optional Advanced Timing and Constraint Optimization . . . . . . . . . . . . . . . . . . . . . 381 5.923. 3.C.13. Technical Design-Around Correspondence . . . . 381 5.924. 3.C.14. PHOSITA Reference Implementation Architecture . . . . . . . . . . . . . . . . . . . . . 383 5.925. 3.C.15. Detailed PHOSITA Implementation Procedure . . . 384 5.926. 3.C.16. Failure and Adversarial Conditions . . . . . . 388 5.927. F05 - Network terminates session during pending extension: Termination state . . . . . . . . . . . . . . . . . . . 388 5.928. F32 - Session unavailable but resource remains temporarily: Provider cleanup . . . . . . . . . . . . . 390 5.929. F42 - API state and observed network QoS disagree: Scope-specific discrepancy . . . . . . . . . . . . . . 390 5.930. 3.C.17. Representative Proposed Verification Test Suite . . . . . . . . . . . . . . . . . . . . . . . . . 391 5.931. Test . . . . . . . . . . . . . . . . . . . . . . . . . . 391 5.932. Controlled scenario Expected technical result ID . . . . 391 5.933. 3.C.17.1. Test Fixture Requirements . . . . . . . . . . 398 5.934. 3.C.18. Established Technical Standards and Reference Interfaces . . . . . . . . . . . . . . . . . . . . . . 399 5.935. 3.C.18.1. CAMARA Quality on Demand . . . . . . . . . . 399 5.936. 3.C.18.4. 3GPP Charging Specifications . . . . . . . . . 400 5.937. 3.C.18.5. Ordinary Database and Distributed Processing Technologies . . . . . . . . . . . . . . . . . . . . . 400 5.938. 3.C.19. Specific Claim-Supporting Relationships . . . . 400 5.939. Relationship 3 - Noncommutative lifecycle evaluation: Distinguishing extension, . . . . . . . . . . . . . . . 401 5.940. 3.C.20. Relationship to the Foundational Shared Technical Foundation . . . . . . . . . . . . . . . . . . . . . . 402 5.941. 3.C.21. Particular Technical Effects . . . . . . . . . 403 5.942. 3.C.22. Non-Limiting Implementation Character . . . . . 404 5.943. 3.C.23. Conclusion . . . . . . . . . . . . . . . . . . 405 5.944. This completes Embodiment 3.C without repeating generic quota enforcement, . . . . . . . . . . . . . . . . . . 406 5.945. EMBODIMENT 4.C - SERVICE-EFFECT VERIFICATION, NETWORK-USAGE ATTRIBUTION, CHARGING-RECORD LINEAGE, AND ACCOUNTING-STATE CORRESPONDENCE . . . . . . . . . . . . 406 5.946. 4.C.1. Embodiment Identification and Technical Scope . 406 5.947. Related Embodiments: . . . . . . . . . . . . . . . . . . 407 5.948. 4.C.2. Specific Technical Problem Space . . . . . . . . 410 Das Expires 3 May 2027 [Page 31] Internet-Draft Telecom Session Operational Consistency October 2026 5.949. 4.C.2.1. Requested Service and Effective Service May Differ . . . . . . . . . . . . . . . . . . . . . . . . 410 5.950. 4.C.2.2. A Network Policy Installation Does Not Prove Application Performance . . . . . . . . . . . . . . . . 410 5.951. 4.C.2.3. Service Measurement and Usage Measurement May Describe Different Populations . . . . . . . . . . . . 411 5.952. 4.C.2.4. Application Traffic Can Traverse Several Network Functions . . . . . . . . . . . . . . . . . . . . . . . 411 5.953. 4.C.2.5. Traffic Can Be Counted at More Than One Measurement Point . . . . . . . . . . . . . . . . . . . 411 5.954. 4.C.2.6. Network Translation Can Obscure Flow Identity . . . . . . . . . . . . . . . . . . . . . . . 411 5.955. 4.C.2.7. Application-Facing and PDU Session Identities May Differ . . . . . . . . . . . . . . . . . . . . . . 412 5.956. 4.C.2.8. Service Effect Can Begin after Session Creation . . . . . . . . . . . . . . . . . . . . . . . 412 5.957. 4.C.2.9. Service Effect Can End before Resource Cleanup . . . . . . . . . . . . . . . . . . . . . . . . 412 5.958. 4.C.2.10. Resource Allocation Does Not Establish Traffic Delivery . . . . . . . . . . . . . . . . . . . . . . . 412 5.959. 4.C.2.11. Usage Can Occur without the Requested QoS Effect . . . . . . . . . . . . . . . . . . . . . . . . 413 5.960. 4.C.2.12. Report Time and Measurement Time Can Differ . . . . . . . . . . . . . . . . . . . . . . . . 413 5.961. 4.C.2.13. Metering Sources Can Use Different Definitions . . . . . . . . . . . . . . . . . . . . . . 413 5.962. 4.C.2.14. Usage Units Can Be Incompatible . . . . . . . 413 5.963. 4.C.2.15. Reporting Rules Can Have Different Scopes . . 414 5.964. 4.C.2.16. A PFCP Report Is Not Automatically a Final Charging Record . . . . . . . . . . . . . . . . . . . . 414 5.965. 4.C.2.17. Charging Requests Can Be Asynchronous . . . . 414 5.966. 4.C.2.18. An Initial Charging Interaction Is Not Final Settlement . . . . . . . . . . . . . . . . . . . . . . 414 5.967. 4.C.2.19. An Intermediate Charging Interaction May Be Repeated . . . . . . . . . . . . . . . . . . . . . . . 414 5.968. 4.C.2.20. A Charging Release Is Not Necessarily External Financial Settlement . . . . . . . . . . . . . . . . . 415 5.969. 4.C.2.21. Charging Data Can Be Rated Differently by Service Context . . . . . . . . . . . . . . . . . . . . 415 5.970. 4.C.2.22. Rating Changes Can Occur During a Session . . 415 5.971. 4.C.2.23. Roaming Can Change Charging Responsibilities . . . . . . . . . . . . . . . . . . . 415 5.972. 4.C.2.24. Interoperator Records Can Be Delayed . . . . 416 5.973. 4.C.2.25. A Usage Record Can Be Duplicated in Transport . . . . . . . . . . . . . . . . . . . . . . . 416 5.974. 4.C.2.26. Different Reports Can Legitimately Share the Same Value . . . . . . . . . . . . . . . . . . . . . . 416 5.975. 4.C.2.27. Usage Reports Can Be Corrected . . . . . . . 416 Das Expires 3 May 2027 [Page 32] Internet-Draft Telecom Session Operational Consistency October 2026 5.976. 4.C.2.28. Source Counters Can Restart . . . . . . . . . 416 5.977. 4.C.2.29. Partial Traffic Measurements Can Be Misleading . . . . . . . . . . . . . . . . . . . . . . 417 5.978. 4.C.2.30. Usage Reports Can Cover Overlapping Time Windows . . . . . . . . . . . . . . . . . . . . . . . . 417 5.979. 4.C.2.31. Measurement Gaps Do Not Establish Zero Usage . . . . . . . . . . . . . . . . . . . . . . . . . 417 5.980. 4.C.2.32. A Final Report Can Be Incomplete . . . . . . 417 5.981. 4.C.2.33. Usage and Billed Amounts May Be Different Quantities . . . . . . . . . . . . . . . . . . . . . . 417 5.982. 4.C.2.34. A Zero Charge Does Not Necessarily Mean Zero Usage . . . . . . . . . . . . . . . . . . . . . . . . . 418 5.983. 4.C.2.35. A Nonzero Charge Does Not Necessarily Prove Current Traffic . . . . . . . . . . . . . . . . . . . . 418 5.984. 4.C.2.36. A QoS Outcome Does Not Automatically Determine a Refund . . . . . . . . . . . . . . . . . . . . . . . 418 5.985. 4.C.2.37. Accounting Records May Describe Derived Aggregates . . . . . . . . . . . . . . . . . . . . . . 418 5.986. 4.C.2.38. Charging Revisions May Have Historical Effective Dates . . . . . . . . . . . . . . . . . . . . 418 5.987. 4.C.2.39. Session Deletion May Leave Accounting Incomplete . . . . . . . . . . . . . . . . . . . . . . 419 5.988. 4.C.2.40. A Charging System Can Fail after Receiving Usage . . . . . . . . . . . . . . . . . . . . . . . . . 419 5.989. 4.C.3. Specific Technical Contribution Sought . . . . . 419 5.990. 4.C.4. Representative System Architecture . . . . . . . 421 5.991. 4.C.4.1. Service Session Identity Resolver . . . . . . 421 5.992. 4.C.4.2. Service Effect Specification Repository . . . 421 5.993. 4.C.4.3. Service State Observer . . . . . . . . . . . . 421 5.994. 4.C.4.4. Resource and Flow Mapper . . . . . . . . . . . 421 5.995. 4.C.4.5. Service-Performance Observer . . . . . . . . . 421 5.996. 4.C.4.6. Traffic Measurement Collector . . . . . . . . 421 5.997. 4.C.4.7. Traffic Population Correspondence Evaluator . 422 5.998. 4.C.4.8. Counter and Source Generation Manager . . . . 422 5.999. 4.C.4.9. Usage Lineage Repository . . . . . . . . . . . 422 5.1000. 4.C.4.10. Measurement Interval Evaluator . . . . . . . 422 5.1001. 4.C.4.11. Charging Context Resolver . . . . . . . . . 422 5.1002. 4.C.4.12. Charging Operation Tracker . . . . . . . . . 422 5.1003. 4.C.4.13. Rating Context Evaluator . . . . . . . . . . 422 5.1004. 4.C.4.14. Accounting Record Correlator . . . . . . . . 423 5.1005. 4.C.4.15. Interoperator Accounting Context Interface . . . . . . . . . . . . . . . . . . . . . . . 423 5.1006. 4.C.4.16. Charging Completeness Evaluator . . . . . . 423 5.1007. 4.C.4.17. Session Closure Correspondence Evaluator . . 423 5.1008. 4.C.4.18. Revision and Correction Processor . . . . . 423 5.1009. 4.C.4.19. Evidence Provenance Repository . . . . . . . 423 5.1010. 4.C.4.20. Optional Existing Charging and Effectuation Interface . . . . . . . . . . . . . . . . . . . . . . . 423 Das Expires 3 May 2027 [Page 33] Internet-Draft Telecom Session Operational Consistency October 2026 5.1011. 4.C.5. Necessary Embodiment-Specific Interpretations . . . . . . . . . . . . . . . . . . . . 424 5.1012. 4.C.6. Representative Data Structures . . . . . . . . 425 5.1013. 4.C.6.1. Service Effect Record . . . . . . . . . . . . 425 5.1014. 4.C.6.2. Time-Qualified Flow Mapping . . . . . . . . . 425 5.1015. 4.C.6.3. Original Usage Measurement . . . . . . . . . 425 5.1016. 4.C.6.4. Usage Report Lineage . . . . . . . . . . . . 425 5.1017. 4.C.6.5. Charging Context Record . . . . . . . . . . . 425 5.1018. 4.C.6.6. Charging Operation Record . . . . . . . . . . 426 5.1019. 4.C.6.7. Accounting Correspondence Result . . . . . . 426 5.1020. 4.C.6.8. Complete Service-to-Charging Reconstruction . . . . . . . . . . . . . . . . . . . . 426 5.1021. 4.C.7. Detailed Operational Procedure - C-V4 . . . . . 427 5.1022. 4.C-01 - Identify the Application-Facing Service . . . 427 5.1023. 4.C-02 - Resolve the Logical Network Session . . . . . 427 5.1024. 4.C-03 - Retrieve the Service Objective . . . . . . . . 427 5.1025. 4.C-04 - Establish Service Status History . . . . . . . 427 5.1026. 4.C-05 - Determine the Service-Effect Interval . . . . 427 5.1027. 4.C-06 - Resolve Network Resource Relationships . . . . 428 5.1028. 4.C-07 - Determine the Traffic Population . . . . . . . 428 5.1029. 4.C-08 - Qualify Flow Identity and Time . . . . . . . . 428 5.1030. 4.C-09 - Obtain Resource-Application Evidence . . . . . 428 5.1031. 4.C-10 - Obtain Service-Performance Observations . . . 428 5.1032. 4.C-11 - Determine Measurement Representativeness . . . 428 5.1033. 4.C-12 - Classify the Service Effect . . . . . . . . . 428 5.1034. 4.C-13 - Identify Usage Measurement Sources . . . . . . 429 5.1035. 4.C-14 - Qualify Measurement Source Generations . . . . 429 5.1036. 4.C-15 - Determine Measurement Semantics . . . . . . . 429 5.1037. 4.C-16 - Determine Direction and Accounting Population . . . . . . . . . . . . . . . . . . . . . . 429 5.1038. 4.C-17 - Acquire Original Measurement Records . . . . . 429 5.1039. 4.C-18 - Associate Measurement Windows . . . . . . . . 429 5.1040. 4.C-19 - Identify Counter Resets or Relocations . . . . 429 5.1041. 4.C-20 - Classify Report Lineage . . . . . . . . . . . 430 5.1042. 4.C-21 - Identify Duplicated Measurement Contributions . . . . . . . . . . . . . . . . . . . . . 430 5.1043. 4.C-22 - Identify Overlapping Traffic Measurements . . 430 5.1044. 4.C-23 - Reconcile Source and Target Resource Usage . . 430 5.1045. 4.C-24 - Determine Measurement Coverage . . . . . . . . 430 5.1046. 4.C-25 - Derive Supported Usage Quantities . . . . . . 430 5.1047. 4.C-26 - Resolve the Charging Context . . . . . . . . . 430 5.1048. 4.C-27 - Determine Rating and Service Scope . . . . . . 431 5.1049. 4.C-28 - Identify Rating Context Changes . . . . . . . 431 5.1050. 4.C-29 - Determine Usage Partition Requirements . . . . 431 5.1051. 4.C-30 - Retrieve Charging Operations . . . . . . . . . 431 5.1052. 4.C-31 - Qualify Charging Request Identity . . . . . . 431 5.1053. 4.C-32 - Reconcile Receiver Status . . . . . . . . . . 431 5.1054. 4.C-33 - Associate Usage with Charging Operations . . . 431 Das Expires 3 May 2027 [Page 34] Internet-Draft Telecom Session Operational Consistency October 2026 5.1055. 4.C-34 - Identify Charging Record Duplication or Derivation . . . . . . . . . . . . . . . . . . . . . . 432 5.1056. 4.C-35 - Obtain Accounting Processing Status . . . . . 432 5.1057. 4.C-36 - Evaluate Charging and Rating Correspondence . 432 5.1058. 4.C-37 - Evaluate Interoperator Records Where Relevant . . . . . . . . . . . . . . . . . . . . . . . 432 5.1059. 4.C-38 - Evaluate Final Usage Coverage . . . . . . . . 432 5.1060. 4.C-39 - Evaluate Charging-Session Closure . . . . . . 432 5.1061. 4.C-40 - Evaluate Operational Session Closure . . . . . 433 5.1062. 4.C-41 - Evaluate Outstanding Financial or Interoperator Settlement . . . . . . . . . . . . . . . . . . . . . . 433 5.1063. 4.C-42 - Identify Contradictions and Missing Evidence . . . . . . . . . . . . . . . . . . . . . . . 433 5.1064. 4.C-43 - Determine Which Conclusions Are Established . 433 5.1065. 4.C-44 - Process Corrections and Late Reports . . . . . 433 5.1066. 4.C-45 - Preserve Traceable Reconstruction Evidence . . 433 5.1067. 4.C-46 - Produce the Final Service-to-Charging Correspondence Result . . . . . . . . . . . . . . . . . 434 5.1068. 4.C.8. Technical Invariants . . . . . . . . . . . . . 434 5.1069. C4-I04 - Application performance and network usage may have different measurement populations. . . . . . . . . 434 5.1070. C4-I24 - A derived aggregate must not be counted again with all its constituent measurements. . . . . . . . . 435 5.1071. C4-I30 - Intermediate charging updates do not necessarily represent independent increments. . . . . . . . . . . . 435 5.1072. C4-I41 - Home-operator accounting is not automatically complete interoperator settlement. . . . . . . . . . . 436 5.1073. C4-I43 - Complete transport delivery does not establish complete physical measurement coverage. . . . . . . . . 436 5.1074. 4.C.9. Mathematical Formulation . . . . . . . . . . . 437 5.1075. 4.C.9.1. Service-to-Charging State Vector . . . . . . 437 5.1076. 4.C.9.2. Service-Effect Verification . . . . . . . . . 438 5.1077. 4.C.9.3. Traffic-Population Mapping . . . . . . . . . 438 5.1078. 4.C.9.4. Measurement Additivity . . . . . . . . . . . 438 5.1079. 4.C.9.5. Cumulative Counter Difference . . . . . . . . 439 5.1080. 4.C.9.6. Time-Qualified Measurement Coverage . . . . . 439 5.1081. 4.C.9.7. Service Effect and Chargeable Usage . . . . . 439 5.1082. 4.C.9.8. Rating-Context Partition . . . . . . . . . . 439 5.1083. 4.C.9.9. Rated Charge Function . . . . . . . . . . . . 440 5.1084. 4.C.9.10. Zero-Rated Usage . . . . . . . . . . . . . . 440 5.1085. 4.C.9.11. Record Lineage . . . . . . . . . . . . . . . 440 5.1086. 4.C.9.12. Charging Operation State . . . . . . . . . . 441 5.1087. 4.C.9.13. Accounting Completeness . . . . . . . . . . 441 5.1088. 4.C.9.14. Historical Correction . . . . . . . . . . . 441 5.1089. 4.C.9.15. Dependency-Based Revalidation . . . . . . . 441 5.1090. 4.C.9.16. Worked Numerical Example - Double Measurement . . . . . . . . . . . . . . . . . . . . . . 442 5.1091. 4.C.9.17. Worked Numerical Example - Rating Change . . 442 Das Expires 3 May 2027 [Page 35] Internet-Draft Telecom Session Operational Consistency October 2026 5.1092. 4.C.10. Implementable Pseudocode - C-ALG-05 . . . . . 442 5.1093. 4.C.10.1. Core Types . . . . . . . . . . . . . . . . . 442 5.1094. 4.C.10.2. Resolve Service and Flow Identity . . . . . 443 5.1095. 4.C.10.3. Evaluate Service Effect . . . . . . . . . . 443 5.1096. 4.C.10.4. Qualify Original Usage Measurements . . . . 444 5.1097. 4.C.10.5. Reconcile Report Lineage . . . . . . . . . . 445 5.1098. 4.C.10.6. Prevent Double Counting . . . . . . . . . . 445 5.1099. 4.C.10.7. Resolve Charging Context . . . . . . . . . . 446 5.1100. 4.C.10.8. Reconcile Charging Operations . . . . . . . 447 5.1101. 4.C.10.9. Evaluate Rating Periods . . . . . . . . . . 447 5.1102. 4.C.10.10. Reconcile Accounting Records . . . . . . . 448 5.1103. 4.C.10.11. Evaluate Closure . . . . . . . . . . . . . 448 5.1104. 4.C.10.12. Full Embodiment Orchestration . . . . . . . 449 5.1105. 4.C.11. Worked Technical Examples . . . . . . . . . . 450 5.1106. 4.C.11.1. Example 1 - QoS AVAILABLE but Performance Not Established . . . . . . . . . . . . . . . . . . . . . . 450 5.1107. 4.C.11.2. Example 2 - Service Treatment Available, Traffic Absent . . . . . . . . . . . . . . . . . . . . 451 5.1108. 4.C.11.3. Example 3 - Baseline Traffic Continues after QoS Ends . . . . . . . . . . . . . . . . . . . . . . . 451 5.1109. 4.C.11.4. Example 4 - Same Traffic Measured by Two UPFs . . . . . . . . . . . . . . . . . . . . . . . . . 451 5.1110. 4.C.11.5. Example 5 - Different Traffic Populations at Two UPFs . . . . . . . . . . . . . . . . . . . . . . . 452 5.1111. 4.C.11.6. Example 6 - One PDU Session, Several Application Services . . . . . . . . . . . . . . . . . 452 5.1112. 4.C.11.7. Example 7 - Overlapping Reporting Rules . . 452 5.1113. 4.C.11.8. Example 8 - Cumulative Counter Correction . 452 5.1114. 4.C.11.9. Example 9 - Counter Reset after Function Restart . . . . . . . . . . . . . . . . . . . . . . . . 453 5.1115. 4.C.11.10. Example 10 - Charging Initial versus Final Operation . . . . . . . . . . . . . . . . . . . . . . . 453 5.1116. 4.C.11.11. Example 11 - Lost Charging Response . . . . 453 5.1117. 4.C.11.12. Example 12 - Zero-Rated Service . . . . . . 453 5.1118. 4.C.11.13. Example 13 - Rating Group Change Mid-Session . . . . . . . . . . . . . . . . . . . . . . 454 5.1119. 4.C.11.14. Example 14 - Measurement Window Crosses Rating Change . . . . . . . . . . . . . . . . . . . . . 454 5.1120. 4.C.11.15. Example 15 - Late Report after Session Termination . . . . . . . . . . . . . . . . . . . . . . 454 5.1121. 4.C.11.16. Example 16 - Corrected Usage Record . . . . 454 5.1122. 4.C.11.17. Example 17 - Derived Summary Duplicates Raw Usage . . . . . . . . . . . . . . . . . . . . . . . . . 455 5.1123. 4.C.11.18. Example 18 - Interoperator Record Pending . . . . . . . . . . . . . . . . . . . . . . . . 455 5.1124. 4.C.11.19. Example 19 - Resource Released, Charging Open . . . . . . . . . . . . . . . . . . . . . . . . . 455 Das Expires 3 May 2027 [Page 36] Internet-Draft Telecom Session Operational Consistency October 2026 5.1125. 4.C.11.20. Example 20 - Financial Charge Posted after Session End . . . . . . . . . . . . . . . . . . . . . . 455 5.1126. 4.C.11.21. Example 21 - Service Performance Failure and Valid Traffic Usage . . . . . . . . . . . . . . . . . . 456 5.1127. 4.C.11.22. Example 22 - Different Unit Definitions . . 456 5.1128. 4.C.11.23. Example 23 - Flow Address Reuse . . . . . . 456 5.1129. 4.C.11.24. Example 24 - Packet-Path Relocation . . . . 456 5.1130. 4.C.12. Specific Design-Around Alternatives and Implementation Pathways . . . . . . . . . . . . . . . . 457 5.1131. C-4-DA-01 - Centralized Service-to-Charging Reconciler . . . . . . . . . . . . . . . . . . . . . . 457 5.1132. C-4-DA-02 - Federated Operator-Local Reconciliation . . 457 5.1133. C-4-DA-03 - Event-Sourced Measurement and Charging Reconstruction . . . . . . . . . . . . . . . . . . . . 457 5.1134. C-4-DA-04 - Snapshot-and-Delta Accounting Reconstruction . . . . . . . . . . . . . . . . . . . . 458 5.1135. C-4-DA-05 - Relational Service-Flow-Charging Mapping . 458 5.1136. C-4-DA-06 - Graph-Based Evidence Lineage . . . . . . . 458 5.1137. C-4-DA-07 - Service-Status-Only Verification Mechanism: A scoped assessment relies on the provider's service status. . . . . . . . . . . . . . . . . . . . . . . . . 459 5.1138. C-4-DA-08 - Independent Service-Performance Verification . . . . . . . . . . . . . . . . . . . . . 459 5.1139. C-4-DA-09 - Hybrid Network and Application Verification . . . . . . . . . . . . . . . . . . . . . 459 5.1140. C-4-DA-10 - Flow-Qualified Resource Attribution . . . . 459 5.1141. C-4-DA-11 - PDU-Session-Scoped Usage Reconstruction Mechanism: Usage is evaluated for the complete network session. . . . . . . . . . . . . . . . . . . . . . . . 460 5.1142. C-4-DA-12 - Per-Flow Reporting-Rule Reconstruction . . 460 5.1143. C-4-DA-13 - Multi-UPF Measurement Correlation . . . . . 460 5.1144. C-4-DA-14 - Cumulative Counter Lineage . . . . . . . . 461 5.1145. C-4-DA-15 - Incremental Interval Measurement . . . . . 461 5.1146. C-4-DA-16 - Original-Measurement Deduplication Mechanism: Retransmitted reports are related to one original measurement. . . . . . . . . . . . . . . . . . . . . . 461 5.1147. C-4-DA-17 - Correction and Supersession Reconciliation Mechanism: Source-defined corrections replace or amend earlier records. . . . . . . . . . . . . . . . . . . . 461 5.1148. C-4-DA-18 - Derived Summary Lineage Mechanism: Aggregated records reference their underlying measurements. . . . 462 5.1149. C-4-DA-19 - Counter-Generation-Aware Relocation . . . . 462 5.1150. C-4-DA-20 - Service-Effect-Interval Partitioning . . . 462 5.1151. C-4-DA-21 - Rating-Group-Aware Usage Partitioning . . . 463 5.1152. C-4-DA-22 - Charging-Session Identity Correspondence . 463 5.1153. C-4-DA-23 - Converged-Charging Operation Lifecycle Mechanism: Initial, intermediate, and final charging interactions are tracked separately. . . . . . . . . . 463 Das Expires 3 May 2027 [Page 37] Internet-Draft Telecom Session Operational Consistency October 2026 5.1154. C-4-DA-24 - Lost-Response Charging Reconciliation . . . 463 5.1155. C-4-DA-25 - Charging-Record Aggregation Reconciliation . . . . . . . . . . . . . . . . . . . . 464 5.1156. C-4-DA-26 - Time-Qualified Rating Context . . . . . . . 464 5.1157. C-4-DA-27 - Zero-Rated Usage Interpretation . . . . . . 464 5.1158. C-4-DA-28 - Roaming Usage and Charging Federation . . . 465 5.1159. C-4-DA-29 - Late Final-Usage Processing Mechanism: Usage delivered after session closure is assigned to its measurement interval. . . . . . . . . . . . . . . . . . 465 5.1160. C-4-DA-30 - Operational versus Accounting Closure Mechanism: Network resource release and charging completion are evaluated as separate . . . . . . . . . . . . . . . 465 5.1161. C-4-DA-31 - Billing Adjustment Correspondence Mechanism: Financial adjustments are linked to the relevant charged record and usage . . . . . . . . . . . . . . . . . . . 466 5.1162. C-4-DA-32 - Read-Only Independent Charging Consistency Monitor . . . . . . . . . . . . . . . . . . . . . . . . 466 5.1163. C-4-DA-33 - Dependency-Aware Historical Recalculation Mechanism: Corrections trigger selective reevaluation of dependent accounting results. . . . . . . . . . . . . . 466 5.1164. C-4-DA-34 - Crash-Recoverable Measurement Reconciliation Mechanism: Report and calculation frontiers are persisted. . . . . . . . . . . . . . . . . . . . . . . 467 5.1165. C-4-DA-35 - Integrity-Protected Charging Evidence Mechanism: Source reports may be authenticated and integrity-protected. . . . . . . . . . . . . . . . . . 467 5.1166. C-4-DA-36 - Optional Constraint-Based and Advanced Timing Reconstruction . . . . . . . . . . . . . . . . . . . . 467 5.1167. 4.C.13. Design-Around and Functional Correspondence Analysis . . . . . . . . . . . . . . . . . . . . . . . 468 5.1168. 4.C.14. PHOSITA Reference Implementation . . . . . . . 469 5.1169. 4.C.15. Detailed PHOSITA Implementation Procedure . . 470 5.1170. 4.C.16. Failure and Adversarial Conditions . . . . . . 473 5.1171. F01 - API status AVAILABLE but no application performance measurements: . . . . . . . . . . . . . . . . . . . . . 474 5.1172. F02 - Provider status AVAILABLE but measured service fails objective: Distinct . . . . . . . . . . . . . . . 474 5.1173. F04 - Traffic population incorrectly mapped to whole PDU Session: Scope mismatch . . . . . . . . . . . . . . . . 474 5.1174. F23 - Intermediate charging request contains usage already reported: Lineage . . . . . . . . . . . . . . . 475 5.1175. F33 - Service performance degraded with valid measured traffic: Both conditions . . . . . . . . . . . . . . . 476 5.1176. F38 - Same packet measured on two directions or layers: Measurement population . . . . . . . . . . . . . . . . 476 5.1177. F44 - Reporting source clock differs from API server clock: Temporal uncertainty . . . . . . . . . . . . . . 476 Das Expires 3 May 2027 [Page 38] Internet-Draft Telecom Session Operational Consistency October 2026 5.1178. 4.C.17. Representative Proposed Verification Test Suite . . . . . . . . . . . . . . . . . . . . . . . . . 477 5.1179. 4.C.17.1. Test Evidence Requirements . . . . . . . . . 485 5.1180. 4.C.18. Standards and Established Technology Correspondence . . . . . . . . . . . . . . . . . . . . 485 5.1181. 4.C.18.1. CAMARA Quality on Demand . . . . . . . . . . 485 5.1182. 4.C.18.6. 3GPP Session Management and Roaming . . . . . 487 5.1183. 4.C.18.7. Conventional Metering and Billing Systems . 487 5.1184. 4.C.19. Specific Claim-Supporting Relationships . . . 487 5.1185. Relationship 6 - Time-qualified usage-to-charging mapping: Associating measured . . . . . . . . . . . . . 488 5.1186. Relationship 8 - Asynchronous charging outcome reconstruction: Distinguishing . . . . . . . . . . . . 488 5.1187. 4.C.20. Relationship to the Foundational Shared Technical Foundation . . . . . . . . . . . . . . . . . 489 5.1188. 4.C.21. Particular Technical Effects . . . . . . . . . 490 5.1189. 4.C.22. Non-Limiting Implementation Character . . . . 491 5.1190. 4.C.23. Conclusion . . . . . . . . . . . . . . . . . . 492 5.1191. This completes Embodiment 4.C, without repeating Embodiment 3.C's concurrent . . . . . . . . . . . . . . 492 5.1192. EMBODIMENT 5.C - PURPOSE-SCOPED CONSENT-STATE TRANSITIONS, ACTIVE TELECOMMUNICATIONS SERVICE DEPENDENCIES, AND . . . . . . . . . . . . . . . . . . . 493 5.1193. DOWNSTREAM PROCESSING-STATE RECONSTRUCTION . . . . . . 493 5.1194. 5.C.1. Embodiment Identification . . . . . . . . . . . 493 5.1195. Related Embodiments: . . . . . . . . . . . . . . . . . 493 5.1196. 5.C.1.1. General Technical Subject . . . . . . . . . . 494 5.1197. 5.C.1.2. Principal Technical Distinction . . . . . . . 495 5.1198. Question A - What consent condition changed? . . . . . 495 5.1199. Question B - Which activities depend upon the changed condition? . . . . . . . . . . . . . . . . . . . . . . 495 5.1200. Question C - Which activities were pending or ongoing when the change became applicable? . . . . . . . . . . 496 5.1201. Question D - Which resulting processing effects are actually established? . . . . . . . . . . . . . . . . . 496 5.1202. Question E - Which independent services remain unaffected? . . . . . . . . . . . . . . . . . . . . . . 496 5.1203. 5.C.1.3. Distinction from Existing Consent APIs . . . 496 5.1204. 5.C.1.4. Distinction from the Prior Purpose-Execution-Finality Architecture . . . . . . . . 497 5.1205. 5.C.2. Particular Technical Problem Space . . . . . . 497 5.1206. 5.C.2.1. Consent Is Not a Universal Network Session Property . . . . . . . . . . . . . . . . . . . . . . . 498 5.1207. 5.C.2.2. Different Purposes Can Apply to Different Activities . . . . . . . . . . . . . . . . . . . . . . 498 5.1208. 5.C.2.3. Consent Scope and OAuth Scope Are Not Identical Concepts . . . . . . . . . . . . . . . . . . . . . . . 498 Das Expires 3 May 2027 [Page 39] Internet-Draft Telecom Session Operational Consistency October 2026 5.1209. 5.C.2.4. A Consent Check Is a Time-Qualified Observation . . . . . . . . . . . . . . . . . . . . . . 498 5.1210. 5.C.2.5. Consent Withdrawal Notifications Can Be Delayed . . . . . . . . . . . . . . . . . . . . . . . . 499 5.1211. 5.C.2.6. Notification Delivery Does Not Necessarily Establish Application . . . . . . . . . . . . . . . . . 499 5.1212. 5.C.2.7. Source Event Ordering Can Differ from Arrival Ordering . . . . . . . . . . . . . . . . . . . . . . . 499 5.1213. 5.C.2.8. A New Grant Is Not Necessarily Restoration of the Previous Grant . . . . . . . . . . . . . . . . . . 499 5.1214. 5.C.2.9. One User May Have Several Relevant Identity Contexts . . . . . . . . . . . . . . . . . . . . . . . 500 5.1215. 5.C.2.10. Subscriber Identity Can Change During the Service . . . . . . . . . . . . . . . . . . . . . . . . 500 5.1216. 5.C.2.11. A Processing Purpose May Cover Several API Operations . . . . . . . . . . . . . . . . . . . . . . 500 5.1217. 5.C.2.12. One API May Support Several Purposes . . . . 500 5.1218. 5.C.2.13. One Processing Activity May Have More Than One Dependency . . . . . . . . . . . . . . . . . . . . . . 500 5.1219. 5.C.2.14. A Lawful-Basis Determination Is Not a Mere Software Default . . . . . . . . . . . . . . . . . . . 501 5.1220. 5.C.2.15. Withdrawal Does Not Automatically Invalidate Historical Processing . . . . . . . . . . . . . . . . . 501 5.1221. 5.C.2.16. In-Flight API Requests Have Uncertain Outcomes . . . . . . . . . . . . . . . . . . . . . . . 501 5.1222. 5.C.2.17. A Pending Request Is Different from an Accepted Request . . . . . . . . . . . . . . . . . . . 502 5.1223. 5.C.2.18. Cancellation Is Not Necessarily Immediate . 502 5.1224. 5.C.2.19. A Subscription Can Remain Registered without Producing New Events . . . . . . . . . . . . . . . . . 502 5.1225. 5.C.2.21. Cached Information May Have a Different Retention State . . . . . . . . . . . . . . . . . . . . 502 5.1226. 5.C.2.22. Derived Data May Have Multiple Upstream Sources . . . . . . . . . . . . . . . . . . . . . . . . 503 5.1227. 5.C.2.23. Processing Dependencies Can Be Shared . . . 503 5.1228. 5.C.2.24. A Derived Output May Already Have Been Delivered . . . . . . . . . . . . . . . . . . . . . . . 503 5.1229. 5.C.2.25. The Receiving Domain May Be Unreachable . . 504 5.1230. 5.C.2.26. A Remote Acknowledgement May Have Limited Scope . . . . . . . . . . . . . . . . . . . . . . . . . 504 5.1231. 5.C.2.27. Replica Lag Can Produce Divergent Local States . . . . . . . . . . . . . . . . . . . . . . . . 504 5.1232. 5.C.2.28. Consent and Service Conditions Can Change Concurrently . . . . . . . . . . . . . . . . . . . . . 504 5.1233. 5.C.2.30. A Consent Withdrawal Can Affect Only Selected Service Features . . . . . . . . . . . . . . . . . . . 505 5.1234. 5.C.2.31. The Service May Be Technically Dependent on the Processing Activity . . . . . . . . . . . . . . . . 505 Das Expires 3 May 2027 [Page 40] Internet-Draft Telecom Session Operational Consistency October 2026 5.1235. 5.C.2.32. Consent Checks May Be Served through Intermediaries . . . . . . . . . . . . . . . . . . . . 505 5.1236. 5.C.2.33. Aggregator Caching Can Obscure Freshness . . 506 5.1237. 5.C.2.34. Roaming Does Not Automatically Transfer Consent Authority . . . . . . . . . . . . . . . . . . . 506 5.1238. 5.C.2.35. Consent Scope Can Include Multiple Data Categories . . . . . . . . . . . . . . . . . . . . . . 506 5.1239. 5.C.2.37. A Rejected Consent Update Is Not an Effective Withdrawal Record . . . . . . . . . . . . . . . . . . . 507 5.1240. 5.C.2.38. An Authentic Consent Record Can Be Stale . . 507 5.1241. 5.C.2.39. Absence of a Consent Record Is Not a Universal Legal Conclusion . . . . . . . . . . . . . . . . . . . 507 5.1242. 5.C.2.40. An Unresolved Consent Mapping Must Not Be Guessed . . . . . . . . . . . . . . . . . . . . . . . . 507 5.1243. 5.C.2.41. Source Versions Are Not Globally Comparable . . . . . . . . . . . . . . . . . . . . . . 507 5.1244. 5.C.2.42. Data-Processing Cessation Can Have Several Separate Dimensions . . . . . . . . . . . . . . . . . . 508 5.1245. 5.C.2.43. A Missing Response Does Not Establish Continued Processing . . . . . . . . . . . . . . . . . 508 5.1246. 5.C.2.44. A Successful Notification Does Not Establish Universal Cessation . . . . . . . . . . . . . . . . . . 508 5.1247. 5.C.2.45. A Technical Discrepancy Is Not Automatically a Legal Violation . . . . . . . . . . . . . . . . . . . . 508 5.1248. 5.C.2.46. Reconstruction Is Not Effectuation Authority . . . . . . . . . . . . . . . . . . . . . . . 509 5.1249. 5.C.3. Specific Technical Contribution Sought . . . . 509 5.1250. 5.C.4. Representative Technical Components . . . . . . 510 5.1251. 5.C.4.1. Consent Source Adapter . . . . . . . . . . . 510 5.1252. 5.C.4.2. Consent Subject Resolver . . . . . . . . . . 510 5.1253. 5.C.4.3. Purpose and Scope Normalizer . . . . . . . . 511 5.1254. 5.C.4.4. Consent Revision Repository . . . . . . . . . 511 5.1255. 5.C.4.5. Processing Activity Inventory . . . . . . . . 511 5.1256. 5.C.4.6. Processing Dependency Resolver . . . . . . . 511 5.1257. 5.C.4.7. Active Telecommunications Service Resolver . 511 5.1258. 5.C.4.8. API Request State Collector . . . . . . . . . 511 5.1259. 5.C.4.9. Event Subscription State Collector . . . . . 511 5.1260. 5.C.4.10. Asynchronous Job State Collector . . . . . . 512 5.1261. 5.C.4.11. Cache and Derived-Data Correspondence Interface . . . . . . . . . . . . . . . . . . . . . . . 512 5.1262. 5.C.4.12. Downstream Consumer State Collector . . . . 512 5.1263. 5.C.4.13. State-Transition Chronology Resolver . . . . 512 5.1264. 5.C.4.14. Processing-State Reconstructor . . . . . . . 512 5.1265. 5.C.4.15. Unaffected Service Evaluator . . . . . . . . 512 5.1266. 5.C.4.16. Incomplete-Coverage Evaluator . . . . . . . 512 5.1267. 5.C.4.17. Historical Revision Manager . . . . . . . . 512 5.1268. 5.C.4.18. Optional Existing Protected Enforcement Interface . . . . . . . . . . . . . . . . . . . . . . . 513 Das Expires 3 May 2027 [Page 41] Internet-Draft Telecom Session Operational Consistency October 2026 5.1269. 5.C.5. Necessary Embodiment-Specific Interpretations . . . . . . . . . . . . . . . . . . . . 513 5.1270. 5.C.5.1. Consent-Processing Correspondence . . . . . . 513 5.1271. 5.C.5.2. Purpose-Scoped Transition . . . . . . . . . . 513 5.1272. 5.C.5.3. Processing Dependency Set . . . . . . . . . . 513 5.1273. 5.C.5.4. Consent Revision Context . . . . . . . . . . 513 5.1274. 5.C.5.5. Processing-State Observation . . . . . . . . 513 5.1275. 5.C.5.6. Downstream Cessation Correspondence . . . . . 513 5.1276. 5.C.5.7. Historical Processing Boundary . . . . . . . 514 5.1277. 5.C.5.8. Unaffected Connectivity Context . . . . . . . 514 5.1278. 5.C.6. Representative Data Structures . . . . . . . . 514 5.1279. 5.C.6.1. Consent Transition Event . . . . . . . . . . 514 5.1280. 5.C.6.2. Consent Subject Mapping . . . . . . . . . . . 514 5.1281. 5.C.6.3. Processing Activity Record . . . . . . . . . 514 5.1282. 5.C.6.4. Dependency Relationship . . . . . . . . . . . 515 5.1283. 5.C.6.5. Downstream State Record . . . . . . . . . . . 515 5.1284. 5.C.6.6. Consent Propagation Record . . . . . . . . . 515 5.1285. 5.C.6.7. Processing Impact Assessment . . . . . . . . 515 5.1286. 5.C.7. Detailed Operational Procedure - C-V5 . . . . . 515 5.1287. 5.C-01 - Receive the Consent Change . . . . . . . . . . 516 5.1288. 5.C-02 - Identify the Consent Source . . . . . . . . . 516 5.1289. 5.C-03 - Qualify Event Identity . . . . . . . . . . . . 516 5.1290. 5.C-04 - Resolve the Consent Subject . . . . . . . . . 516 5.1291. 5.C-05 - Resolve the Purpose . . . . . . . . . . . . . 516 5.1292. 5.C-06 - Resolve the Processing Scopes . . . . . . . . 516 5.1293. 5.C-07 - Determine the State Transition . . . . . . . . 517 5.1294. 5.C-08 - Establish the Effective-State Context . . . . 517 5.1295. 5.C-09 - Identify Source Monitoring and Completeness Limits . . . . . . . . . . . . . . . . . . . . . . . . 517 5.1296. 5.C-10 - Identify Relevant Telecommunications Services . . . . . . . . . . . . . . . . . . . . . . . 517 5.1297. 5.C-11 - Identify Processing Activities . . . . . . . . 517 5.1298. 5.C-12 - Construct Consent Dependencies . . . . . . . . 517 5.1299. 5.C-13 - Evaluate Subject Applicability . . . . . . . . 517 5.1300. 5.C-14 - Evaluate Purpose Applicability . . . . . . . . 518 5.1301. 5.C-15 - Evaluate Scope Applicability . . . . . . . . . 518 5.1302. 5.C-16 - Determine the Affected Activity Set . . . . . 518 5.1303. 5.C-17 - Identify Independently Governed Activities . . 518 5.1304. 5.C-18 - Evaluate Underlying Connectivity Dependencies . . . . . . . . . . . . . . . . . . . . . 518 5.1305. 5.C-19 - Acquire Pending API Requests . . . . . . . . . 518 5.1306. 5.C-20 - Acquire Event Subscription State . . . . . . . 519 5.1307. 5.C-21 - Acquire Asynchronous Processing State . . . . 519 5.1308. 5.C-22 - Identify Cached and Derived Data . . . . . . . 519 5.1309. 5.C-23 - Determine Supported Event Ordering . . . . . . 519 5.1310. 5.C-24 - Evaluate Pre-Change Processing . . . . . . . . 519 5.1311. 5.C-25 - Evaluate In-Flight Processing . . . . . . . . 519 Das Expires 3 May 2027 [Page 42] Internet-Draft Telecom Session Operational Consistency October 2026 5.1312. 5.C-26 - Identify Applicable Existing Processing Controls . . . . . . . . . . . . . . . . . . . . . . . 519 5.1313. 5.C-27 - Observe Consent Propagation . . . . . . . . . 520 5.1314. 5.C-28 - Observe Subscription Changes . . . . . . . . . 520 5.1315. 5.C-29 - Observe Request and Job Effects . . . . . . . 520 5.1316. 5.C-30 - Evaluate Continued Collection . . . . . . . . 520 5.1317. 5.C-31 - Evaluate Downstream Processing Continuity . . 520 5.1318. 5.C-32 - Evaluate Cached Data State . . . . . . . . . . 520 5.1319. 5.C-33 - Evaluate Derived Output State . . . . . . . . 520 5.1320. 5.C-34 - Evaluate Remote Consumer Coverage . . . . . . 521 5.1321. 5.C-35 - Detect Revision Divergence . . . . . . . . . . 521 5.1322. 5.C-36 - Reconstruct the Possible Processing States . . 521 5.1323. 5.C-37 - Evaluate Service Continuity . . . . . . . . . 521 5.1324. 5.C-38 - Determine Required Cessation Evidence . . . . 521 5.1325. 5.C-39 - Evaluate the Scoped Processing Result . . . . 521 5.1326. 5.C-40 - Process Later Grants or Corrections . . . . . 522 5.1327. 5.C-41 - Identify Historical Assessments Requiring Revision . . . . . . . . . . . . . . . . . . . . . . . 522 5.1328. 5.C-42 - Reconcile Outstanding Remote Outcomes . . . . 522 5.1329. 5.C-43 - Preserve Reconstructible Evidence . . . . . . 522 5.1330. 5.C-44 - Produce the Consent-to-Processing Correspondence Result . . . . . . . . . . . . . . . . . . . . . . . . 522 5.1331. 5.C.8. Technical Invariants . . . . . . . . . . . . . 522 5.1332. C5-I02 - A consent withdrawal does not automatically terminate an underlying connectivity session. . . . . . 523 5.1333. C5-I03 - Withdrawal for one purpose does not automatically withdraw consent for unrelated purposes. 523 5.1334. C5-I05 - A valid access token does not alone establish current consent-based processing validity. . . . . . . 523 5.1335. C5-I11 - Independent revision namespaces must not be numerically ordered without mapping. . . . . . . . . . 523 5.1336. C5-I21 - A processing activity's applicable basis cannot be invented by the reconstruction engine. . . . . . . . 524 5.1337. C5-I22 - A record of consent withdrawal does not retroactively erase historical processing events. . . . 524 5.1338. C5-I23 - A request queued before withdrawal is not necessarily processed before withdrawal. . . . . . . . 524 5.1339. C5-I25 - A cancellation request does not automatically establish cancellation completion. . . . . . . . . . . 524 5.1340. C5-I26 - Removing an event subscription does not automatically remove previously obtained data. . . . . 524 5.1341. C5-I27 - An absent subscription record does not automatically prove no in-flight notifications remain. 524 5.1342. C5-I35 - Successful consumer acknowledgement does not prove global processing cessation. . . . . . . . . . . 525 5.1343. C5-I38 - The absence of a matching consent record has the meaning defined by its source contract. . . . . . . . . 525 Das Expires 3 May 2027 [Page 43] Internet-Draft Telecom Session Operational Consistency October 2026 5.1344. C5-I39 - A user-level change cannot automatically be propagated across unrelated subscriber generations. . . 525 5.1345. C5-I42 - Continued connectivity does not prove continued consent-dependent processing. . . . . . . . . . . . . . 525 5.1346. C5-I43 - A stopped optional API does not necessarily mean the entire application service ended. . . . . . . . . . 525 5.1347. C5-I47 - Historical source corrections may require reassessment without changing past physical effects. . 525 5.1348. C5-I48 - A reconstruction verdict does not independently determine legal noncompliance. . . . . . . . . . . . . 525 5.1349. C5-I49 - A reconstruction verdict does not independently authorize deletion, termination, or other consequential actions. . . . . . . . . . . . . . . . . . . . . . . . 525 5.1350. C5-I52 - A claim of complete cessation cannot exceed the actual dependency, consumer, and observation coverage. 526 5.1351. 5.C.9. Mathematical Formulation . . . . . . . . . . . 526 5.1352. 5.C.9.1. Consent State Domain . . . . . . . . . . . . 526 5.1353. 5.C.9.2. Consent Revision State . . . . . . . . . . . 526 5.1354. 5.C.9.3. Processing Dependency . . . . . . . . . . . . 526 5.1355. 5.C.9.4. Affected Processing Set . . . . . . . . . . . 527 5.1356. 5.C.9.5. Applicability Predicate . . . . . . . . . . . 527 5.1357. 5.C.9.6. Processing-State Vector . . . . . . . . . . . 527 5.1358. 5.C.9.7. Consent-Notification Lag . . . . . . . . . . 527 5.1359. 5.C.9.8. In-Flight Request Interval . . . . . . . . . 528 5.1360. 5.C.9.9. Partial-Order Representation . . . . . . . . 528 5.1361. 5.C.9.10. Processing Cessation Objective . . . . . . . 528 5.1362. 5.C.9.11. Service Independence . . . . . . . . . . . . 529 5.1363. 5.C.9.12. Historical Processing Boundary . . . . . . . 529 5.1364. 5.C.9.13. Possible State Set . . . . . . . . . . . . . 529 5.1365. 5.C.9.14. Dependency-Aware Revision . . . . . . . . . 530 5.1366. 5.C.9.15. Illustrative Numerical Timeline . . . . . . 530 5.1367. 5.C.9.16. Illustrative Purpose-Scope Example . . . . . 530 5.1368. 5.C.10. Implementable Pseudocode - C-ALG-06 . . . . . 531 5.1369. 5.C.10.1. Core Types . . . . . . . . . . . . . . . . . 531 5.1370. 5.C.10.2. Qualify the Consent Transition . . . . . . . 531 5.1371. 5.C.10.3. Construct the Processing Dependency Set . . 532 5.1372. 5.C.10.4. Reconstruct Processing Activity State . . . 533 5.1373. 5.C.10.5. Evaluate In-Flight Operations . . . . . . . 533 5.1374. 5.C.10.6. Reconcile Subscription and Notification State . . . . . . . . . . . . . . . . . . . . . . . . . 534 5.1375. 5.C.10.7. Reconcile Cache and Data Processing . . . . 534 5.1376. 5.C.10.8. Preserve Unaffected Connectivity . . . . . . 535 5.1377. 5.C.10.9. Evaluate Scoped Cessation . . . . . . . . . 536 5.1378. 5.C.10.10. Process Later Consent Revisions . . . . . . 536 5.1379. 5.C.10.11. Reconcile Remote Unknown State . . . . . . 537 5.1380. 5.C.10.12. Complete Embodiment Algorithm . . . . . . . 537 5.1381. 5.C.11. Worked Technical Examples . . . . . . . . . . 539 Das Expires 3 May 2027 [Page 44] Internet-Draft Telecom Session Operational Consistency October 2026 5.1382. 5.C.11.1. Example 1 - Marketing Withdrawal While Connectivity Continues . . . . . . . . . . . . . . . . 539 5.1383. 5.C.11.2. Example 2 - Fraud-Prevention Purpose Remains Distinct . . . . . . . . . . . . . . . . . . . . . . . 539 5.1384. 5.C.11.3. Example 3 - Cached Positive Consent Check . 539 5.1385. 5.C.11.4. Example 4 - Delayed Withdrawal Notification . . . . . . . . . . . . . . . . . . . . . 540 5.1386. 5.C.11.5. Example 5 - Several Consumer Replicas . . . 540 5.1387. 5.C.11.6. Example 6 - API Request Straddles Withdrawal . . . . . . . . . . . . . . . . . . . . . . 540 5.1388. 5.C.11.8. Example 8 - Historical Data Retained . . . . 541 5.1389. 5.C.11.9. Example 9 - Derived Analytics Output . . . . 541 5.1390. 5.C.11.10. Example 10 - Grant after Withdrawal . . . . 541 5.1391. 5.C.11.11. Example 11 - Different Subject after Mobile-Number Reassignment . . . . . . . . . . . . . . 541 5.1392. 5.C.11.12. Example 12 - Aggregator Holds an Older Revision . . . . . . . . . . . . . . . . . . . . . . . 542 5.1393. 5.C.11.13. Example 13 - Event Subscription and API Requests Have Different Outcomes . . . . . . . . . . . 542 5.1394. 5.C.11.14. Example 14 - Optional Service Feature Cannot Continue . . . . . . . . . . . . . . . . . . . . . . . 542 5.1395. 5.C.11.15. Example 15 - Alternative Legal Basis Is Asserted . . . . . . . . . . . . . . . . . . . . . . . 543 5.1396. 5.C.11.16. Example 16 - Remote Consumer Unreachable . 543 5.1397. 5.C.11.17. Example 17 - Consent Expiry versus Withdrawal . . . . . . . . . . . . . . . . . . . . . . 543 5.1398. 5.C.11.18. Example 18 - Correction to Effective Time . . . . . . . . . . . . . . . . . . . . . . . . . 543 5.1399. 5.C.11.19. Example 19 - Notification Acknowledged but Cache Still Stale . . . . . . . . . . . . . . . . . . . 544 5.1400. 5.C.11.20. Example 20 - Stopped Processing with Unchanged Network Session . . . . . . . . . . . . . . . 544 5.1401. 5.C.12. Specific Design-Around Alternatives and Implementation Pathways . . . . . . . . . . . . . . . . 544 5.1402. C-5-DA-01 - Centralized Consent-Impact Reconciler . . . 544 5.1403. C-5-DA-02 - Federated Provider-Local Reconstruction . . 545 5.1404. C-5-DA-03 - CAMARA Consent Info Adapter . . . . . . . . 545 5.1405. C-5-DA-04 - CAMARA Consent Management Adapter . . . . . 545 5.1406. C-5-DA-05 - Provider Event-Subscription Reconstruction . . . . . . . . . . . . . . . . . . . . 546 5.1407. C-5-DA-06 - Polling-Based Consent Revision Reconstruction . . . . . . . . . . . . . . . . . . . . 546 5.1408. C-5-DA-07 - Event-and-Polling Hybrid . . . . . . . . . 546 5.1409. C-5-DA-08 - Event-Sourced Consent Dependency Reconstruction Mechanism: Consent changes and processing events are replayed. . . . . . . . . . . . . . . . . . 546 5.1410. C-5-DA-09 - Snapshot-and-Delta Consent State . . . . . 547 5.1411. C-5-DA-10 - Relational Consent-to-Activity Mapping . . 547 Das Expires 3 May 2027 [Page 45] Internet-Draft Telecom Session Operational Consistency October 2026 5.1412. C-5-DA-11 - Graph-Based Processing Dependency Mapping . . . . . . . . . . . . . . . . . . . . . . . . 547 5.1413. C-5-DA-12 - Constraint-Based Applicability Reconstruction . . . . . . . . . . . . . . . . . . . . 548 5.1414. C-5-DA-13 - Source-Scoped Revision Matching . . . . . . 548 5.1415. C-5-DA-14 - Interval-Based Consent Applicability . . . 548 5.1416. C-5-DA-15 - Causal Message-Order Reconstruction . . . . 549 5.1417. C-5-DA-16 - Subscriber-Generation-Aware Consent Mapping . . . . . . . . . . . . . . . . . . . . . . . . 549 5.1418. C-5-DA-17 - Purpose-Specific Dependency Partitioning . 549 5.1419. C-5-DA-18 - API-Scope-Specific Dependency Partitioning Mechanism: Individual API operations are mapped to applicable consent scopes. . . . . . . . . . . . . . . 549 5.1420. C-5-DA-19 - Consent Status Cache Divergence Detection Mechanism: Cached consumer status is compared against supported provider revisions. . . . . . . . . . . . . . 550 5.1421. C-5-DA-20 - Multi-Replica Processing State . . . . . . 550 5.1422. C-5-DA-21 - Asynchronous Job State Reconciliation . . . 550 5.1423. C-5-DA-22 - API Request Race Reconstruction Mechanism: In-flight API operations are reconstructed around consent revision boundaries. . . . . . . . . . . . . . . . . . 551 5.1424. C-5-DA-23 - Event Subscription Cancellation Correspondence . . . . . . . . . . . . . . . . . . . . 551 5.1425. C-5-DA-24 - Cached Data Provenance Reconstruction Mechanism: Cached data is linked to the source and purpose under which it was collected. . . . . . . . . . . . . . 551 5.1426. C-5-DA-25 - Derived Data Lineage Reconstruction . . . . 551 5.1427. C-5-DA-26 - Shared Resource Dependency Separation . . . 552 5.1428. C-5-DA-27 - Unaffected Network Connectivity Reconstruction . . . . . . . . . . . . . . . . . . . . 552 5.1429. C-5-DA-28 - Optional Feature Dependency Reconciliation . . . . . . . . . . . . . . . . . . . . 552 5.1430. C-5-DA-29 - Aggregator/Operator State Reconciliation Mechanism: The operator's consent state is related to an aggregator's exposed or cached . . . . . . . . . . . . 553 5.1431. C-5-DA-30 - Roaming-Context Consent Correspondence . . 553 5.1432. C-5-DA-31 - Later Grant and Scope Change Reconstruction . . . . . . . . . . . . . . . . . . . . 553 5.1433. C-5-DA-32 - Corrected Consent-Event History Mechanism: Source corrections trigger selective reassessment. . . 554 5.1434. C-5-DA-33 - Read-Only Independent Consent-Impact Monitor Mechanism: A monitoring system reconstructs processing-state consequences without . . . . . . . . . 554 5.1435. C-5-DA-34 - Privacy-Minimizing Evidence Exchange . . . 554 5.1436. C-5-DA-35 - Integrity-Protected Consent Evidence . . . 555 5.1437. C-5-DA-36 - Optional Advanced Dependency and Temporal Optimization . . . . . . . . . . . . . . . . . . . . . 555 5.1438. 5.C.13. Specific Design-Around Correspondence . . . . 556 Das Expires 3 May 2027 [Page 46] Internet-Draft Telecom Session Operational Consistency October 2026 5.1439. 5.C.14. PHOSITA Reference Implementation . . . . . . . 557 5.1440. 5.C.15. Detailed PHOSITA Implementation Procedure . . 557 5.1441. 5.C.16. Failure and Adversarial Conditions . . . . . . 561 5.1442. 5.C.17. Representative Proposed Verification Tests . . 563 5.1443. Test . . . . . . . . . . . . . . . . . . . . . . . . . 563 5.1444. Scenario Expected technical result ID . . . . . . . . . 563 5.1445. 5.C.18. Standards and Existing Technology Correspondence . . . . . . . . . . . . . . . . . . . . 571 5.1446. 5.C.18.1. CAMARA Consent Info . . . . . . . . . . . . 571 5.1447. 5.C.18.2. CAMARA Consent Management . . . . . . . . . 572 5.1448. 5.C.18.3. CAMARA Identity and Consent Management . . . 572 5.1449. 5.C.18.4. GSMA Open Gateway . . . . . . . . . . . . . 572 5.1450. 5.C.18.5. Data Protection Frameworks . . . . . . . . . 572 5.1451. 5.C.18.6. 3GPP Network Exposure . . . . . . . . . . . . 573 5.1452. 5.C.18.7. Standard Processing Infrastructure . . . . . 573 5.1453. 5.C.19. Specific Claim-Supporting Relationships . . . 573 5.1454. Relationship 10 - Historical effective-time reconstruction: Distinguishing prior . . . . . . . . . 574 5.1455. 5.C.20. Relationship to the Foundational Shared Technical Foundation . . . . . . . . . . . . . . . . . 575 5.1456. 5.C.21. Particular Technical Effects . . . . . . . . . 576 5.1457. 5.C.22. Non-Limiting Implementation Character . . . . 577 5.1458. 5.C.23. Conclusion . . . . . . . . . . . . . . . . . . 578 5.1459. This completes Embodiment 5.C without repeating established CAMARA consent APIs, . . . . . . . . . . . 579 5.1460. EMBODIMENT 6.C - PARTIAL OPERATOR FAILURE, DISTRIBUTED SESSION RELEASE, RESIDUAL NETWORK-RESOURCE RECONCILIATION, AND . . . . . . . . . . . . . . . . . . . . . . . . . . 579 5.1461. DEFERRED CHARGING-SETTLEMENT RECONSTRUCTION . . . . . . 579 5.1462. 6.C.1. Embodiment Identification and Technical Scope . . . . . . . . . . . . . . . . . . . . . . . . . 579 5.1463. Relationship to Prior Group C Embodiments: . . . . . . 579 5.1464. 6.C.2. Particular Technical Problem Space . . . . . . 583 5.1465. 6.C.2.1. Local Context Release Is Not Necessarily Full Session Release . . . . . . . . . . . . . . . . . . . . 583 5.1466. 6.C.2.2. Full Session Release Requires Its Actual Applicable Scope . . . . . . . . . . . . . . . . . . . 583 5.1467. 6.C.2.3. A Home Operator Can Be Unreachable During Release . . . . . . . . . . . . . . . . . . . . . . . . 584 5.1468. 6.C.2.4. A Visited Operator Can Fail after Home-Side Release . . . . . . . . . . . . . . . . . . . . . . . . 584 5.1469. 6.C.2.5. A Release Request Can Be Applied before Its Response Is Lost . . . . . . . . . . . . . . . . . . . 584 5.1470. 6.C.2.6. Retrying a Release May Have Contract-Specific Behavior . . . . . . . . . . . . . . . . . . . . . . . 584 5.1471. 6.C.2.7. A Release Can Be Acknowledged before All Effects Are Observable . . . . . . . . . . . . . . . . 585 Das Expires 3 May 2027 [Page 47] Internet-Draft Telecom Session Operational Consistency October 2026 5.1472. 6.C.2.8. User-Plane Failure Can Cause Independent Session Deletion . . . . . . . . . . . . . . . . . . . 585 5.1473. 6.C.2.9. Partial User-Plane Failure Need Not Destroy Every Session . . . . . . . . . . . . . . . . . . . . . 585 5.1474. 6.C.2.10. A User-Plane Session May Be Deleted While the Logical Session Is Still Recorded . . . . . . . . . . . 585 5.1475. 6.C.2.11. A Logical Session Can Be Released while Residual Rules Persist . . . . . . . . . . . . . . . . 586 5.1476. 6.C.2.12. Resource Presence Does Not Establish Active Traffic . . . . . . . . . . . . . . . . . . . . . . . . 586 5.1477. 6.C.2.13. Resource Absence Does Not Always Prove a Specific Release Operation Caused It . . . . . . . . . 586 5.1478. 6.C.2.14. Network Function Restart Can Reuse Local Identifiers . . . . . . . . . . . . . . . . . . . . . . 586 5.1479. 6.C.2.15. Replacement SMFs May Reconstruct or Take Over Session State . . . . . . . . . . . . . . . . . . . . . 586 5.1480. 6.C.2.16. Resource Cleanup May Be Partial . . . . . . 587 5.1481. 6.C.2.17. Certain Resources May Be Correctly Retained . . . . . . . . . . . . . . . . . . . . . . . 587 5.1482. 6.C.2.18. Release Dependencies May Be Ordered . . . . 587 5.1483. 6.C.2.19. A Release Can Race with Session Modification . . . . . . . . . . . . . . . . . . . . . 587 5.1484. 6.C.2.20. Release Can Race with Network Function Recovery . . . . . . . . . . . . . . . . . . . . . . . 587 5.1485. 6.C.2.21. A Session May Be Released but Final Usage Remains Unreported . . . . . . . . . . . . . . . . . . 588 5.1486. 6.C.2.22. Release-Related Usage Reports Have Defined Semantics . . . . . . . . . . . . . . . . . . . . . . . 588 5.1487. 6.C.2.23. A Zero or Absent Usage Measurement May Have Several Meanings . . . . . . . . . . . . . . . . . . . 588 5.1488. 6.C.2.24. A Final Report Can Be Delivered More Than Once . . . . . . . . . . . . . . . . . . . . . . . . . 588 5.1489. 6.C.2.25. Final Usage May Overlap Earlier Intermediate Reports . . . . . . . . . . . . . . . . . . . . . . . . 588 5.1490. 6.C.2.26. Counter Reset Can Obscure Final Usage . . . 589 5.1491. 6.C.2.27. Charging Closure Can Lag Behind User-Plane Release . . . . . . . . . . . . . . . . . . . . . . . . 589 5.1492. 6.C.2.28. Final Charging Operation Is Distinct from Final Billing . . . . . . . . . . . . . . . . . . . . . 589 5.1493. 6.C.2.29. Charging Receiver Failure Can Cause Unknown Finalization . . . . . . . . . . . . . . . . . . . . . 589 5.1494. 6.C.2.30. Repeated Final Charging Requests Can Cause Ambiguous Effects . . . . . . . . . . . . . . . . . . . 589 5.1495. 6.C.2.31. Charging Records Can Be Produced after Network Termination . . . . . . . . . . . . . . . . . . . . . . 590 5.1496. 6.C.2.32. Partial Charging Records Can Be Valid . . . 590 5.1497. 6.C.2.33. Final Accounting May Require More Than One Report . . . . . . . . . . . . . . . . . . . . . . . . 590 Das Expires 3 May 2027 [Page 48] Internet-Draft Telecom Session Operational Consistency October 2026 5.1498. 6.C.2.34. Roaming Can Introduce Additional Settlement Stages . . . . . . . . . . . . . . . . . . . . . . . . 590 5.1499. 6.C.2.35. A Remote Operator May Retain an Undelivered Record . . . . . . . . . . . . . . . . . . . . . . . . 590 5.1500. 6.C.2.36. Charging Record Transfer Can Be Duplicated . . . . . . . . . . . . . . . . . . . . . . 591 5.1501. 6.C.2.37. A Charging Record Can Be Corrected after Closure . . . . . . . . . . . . . . . . . . . . . . . . 591 5.1502. 6.C.2.38. Financial Settlement Has Its Own Contract . 591 5.1503. 6.C.2.39. An Empty Charging Queue Does Not Necessarily Prove Accounting Completion . . . . . . . . . . . . . . 591 5.1504. 6.C.2.40. An Unreachable Operator Is Not an Empty Operator State . . . . . . . . . . . . . . . . . . . . 591 5.1505. 6.C.2.41. Different Operators May Use Incomparable Revision Counters . . . . . . . . . . . . . . . . . . . 592 5.1506. 6.C.2.42. Delayed Messages Can Reopen Apparent Uncertainty . . . . . . . . . . . . . . . . . . . . . . 592 5.1507. 6.C.2.43. A Finality Claim Must Identify Its Objective . . . . . . . . . . . . . . . . . . . . . . . 592 5.1508. 6.C.2.44. Compensating Operations Are Not Necessarily Reversals . . . . . . . . . . . . . . . . . . . . . . . 592 5.1509. 6.C.2.45. Failure Recovery Is Not Evidence of Prior Correctness . . . . . . . . . . . . . . . . . . . . . . 593 5.1510. 6.C.2.46. A Reconciliation Result Does Not Grant Remediation Authority . . . . . . . . . . . . . . . . . 593 5.1511. 6.C.3. Specific Technical Contribution Sought . . . . 593 5.1512. 6.C.4. Representative Technical Architecture . . . . . 594 5.1513. 6.C.4.1. Logical Session Resolver . . . . . . . . . . 594 5.1514. 6.C.4.2. Release Scope Classifier . . . . . . . . . . 594 5.1515. 6.C.4.3. Operator Responsibility Resolver . . . . . . 594 5.1516. 6.C.4.4. Release Dependency Model . . . . . . . . . . 594 5.1517. 6.C.4.5. Operation Lifecycle Collector . . . . . . . . 595 5.1518. 6.C.4.6. Failure Context Detector . . . . . . . . . . 595 5.1519. 6.C.4.7. Source-Generation Registry . . . . . . . . . 595 5.1520. 6.C.4.8. Control-Plane State Observer . . . . . . . . 595 5.1521. 6.C.4.9. User-Plane Resource Observer . . . . . . . . 595 5.1522. 6.C.4.10. Resource Cleanup Evaluator . . . . . . . . . 595 5.1523. 6.C.4.11. Usage Reporting Collector . . . . . . . . . 595 5.1524. 6.C.4.12. Counter and Report Lineage Evaluator . . . . 595 5.1525. 6.C.4.13. Final Usage Coverage Evaluator . . . . . . . 596 5.1526. 6.C.4.14. Charging Context Resolver . . . . . . . . . 596 5.1527. 6.C.4.15. Charging Operation Tracker . . . . . . . . . 596 5.1528. 6.C.4.16. Charging Record Correspondence Repository . 596 5.1529. 6.C.4.17. Interoperator Accounting Adapter . . . . . . 596 5.1530. 6.C.4.18. Deferred Settlement Status Interface . . . . 596 5.1531. 6.C.4.19. Contradiction and Unknown-State Evaluator . 596 5.1532. 6.C.4.20. Reconstruction Revision Manager . . . . . . 596 5.1533. 6.C.4.21. Optional Existing Remediation Interface . . 597 Das Expires 3 May 2027 [Page 49] Internet-Draft Telecom Session Operational Consistency October 2026 5.1534. 6.C.5. Necessary Embodiment-Specific Interpretations . . . . . . . . . . . . . . . . . . . . 597 5.1535. 6.C.5.1. Distributed Release Objective . . . . . . . . 597 5.1536. 6.C.5.2. Local Release Scope . . . . . . . . . . . . . 597 5.1537. 6.C.5.3. Residual Network Resource . . . . . . . . . . 597 5.1538. 6.C.5.4. Release Outcome Envelope . . . . . . . . . . 597 5.1539. 6.C.5.5. Usage Closure State . . . . . . . . . . . . . 597 5.1540. 6.C.5.6. Charging Closure State . . . . . . . . . . . 597 5.1541. 6.C.5.7. Deferred Accounting Obligation . . . . . . . 597 5.1542. 6.C.5.8. Settlement Correspondence . . . . . . . . . . 598 5.1543. 6.C.5.9. Closure Vector . . . . . . . . . . . . . . . 598 5.1544. 6.C.6. Representative Data Structures . . . . . . . . 598 5.1545. 6.C.6.1. Distributed Session Closure Context . . . . . 598 5.1546. 6.C.6.2. Release Operation Record . . . . . . . . . . 598 5.1547. 6.C.6.3. Function Failure Record . . . . . . . . . . . 598 5.1548. 6.C.6.4. Resource Cleanup Requirement . . . . . . . . 599 5.1549. 6.C.6.5. Release-Related Usage Record . . . . . . . . 599 5.1550. 6.C.6.6. Charging Closure Context . . . . . . . . . . 599 5.1551. 6.C.6.7. Deferred Accounting Record . . . . . . . . . 599 5.1552. 6.C.6.8. Closure Reconstruction Result . . . . . . . . 599 5.1553. 6.C.7. Detailed Operational Procedure . . . . . . . . 600 5.1554. 6.C-01 - Receive the Release or Failure Event . . . . . 600 5.1555. 6.C-02 - Resolve Logical Session Identity . . . . . . . 600 5.1556. 6.C-03 - Classify the Session Architecture . . . . . . 600 5.1557. 6.C-04 - Identify Participating Functions . . . . . . . 600 5.1558. 6.C-05 - Interpret Release Scope . . . . . . . . . . . 600 5.1559. 6.C-06 - Obtain the Applicable Procedure . . . . . . . 601 5.1560. 6.C-07 - Determine Initial Session State . . . . . . . 601 5.1561. 6.C-08 - Identify Release Dependencies . . . . . . . . 601 5.1562. 6.C-09 - Identify Legitimately Retained Contexts . . . 601 5.1563. 6.C-10 - Construct Required Cleanup Set . . . . . . . . 601 5.1564. 6.C-11 - Obtain Original Release Operations . . . . . . 601 5.1565. 6.C-12 - Identify Duplicate and Retry Relationships . . 601 5.1566. 6.C-13 - Identify Function Failures . . . . . . . . . . 602 5.1567. 6.C-14 - Qualify Function Generations . . . . . . . . . 602 5.1568. 6.C-15 - Establish Known Request Ordering . . . . . . . 602 5.1569. 6.C-16 - Evaluate Receiver Acknowledgements . . . . . . 602 5.1570. 6.C-17 - Identify Unknown Remote Outcomes . . . . . . . 602 5.1571. 6.C-18 - Query Supported Remote Status . . . . . . . . 602 5.1572. 6.C-19 - Observe Home-Side Logical State . . . . . . . 603 5.1573. 6.C-20 - Observe Visited or Intermediate State . . . . 603 5.1574. 6.C-21 - Determine Logical Closure . . . . . . . . . . 603 5.1575. 6.C-22 - Determine Local Context Closure . . . . . . . 603 5.1576. 6.C-23 - Obtain User-Plane Resource State . . . . . . . 603 5.1577. 6.C-24 - Identify UPF-Initiated Failure or Release . . 603 5.1578. 6.C-25 - Evaluate Resource Generation . . . . . . . . . 603 5.1579. 6.C-26 - Evaluate Each Required Cleanup Resource . . . 604 5.1580. 6.C-27 - Evaluate Residual Resources . . . . . . . . . 604 Das Expires 3 May 2027 [Page 50] Internet-Draft Telecom Session Operational Consistency October 2026 5.1581. 6.C-28 - Determine User-Plane Closure . . . . . . . . . 604 5.1582. 6.C-29 - Identify Final Usage Sources . . . . . . . . . 604 5.1583. 6.C-30 - Retrieve Release-Related Usage Reports . . . . 604 5.1584. 6.C-31 - Qualify Report Identity and Trigger . . . . . 604 5.1585. 6.C-32 - Reconcile Duplicates and Corrections . . . . . 604 5.1586. 6.C-33 - Reconcile Counter Generations . . . . . . . . 605 5.1587. 6.C-34 - Reconcile Measurement Coverage . . . . . . . . 605 5.1588. 6.C-35 - Determine Final Usage State . . . . . . . . . 605 5.1589. 6.C-36 - Resolve Charging Session Identity . . . . . . 605 5.1590. 6.C-37 - Retrieve Charging Operation History . . . . . 605 5.1591. 6.C-38 - Evaluate Final Charging Submission . . . . . . 605 5.1592. 6.C-39 - Evaluate Charging Receiver Outcome . . . . . . 605 5.1593. 6.C-40 - Retrieve Downstream Accounting Records . . . . 606 5.1594. 6.C-41 - Reconcile Original and Derived Records . . . . 606 5.1595. 6.C-42 - Evaluate Interoperator Accounting Scope . . . 606 5.1596. 6.C-43 - Evaluate Deferred Settlement State . . . . . . 606 5.1597. 6.C-44 - Construct the Closure Vector . . . . . . . . . 606 5.1598. 6.C-45 - Identify Contradictions and Missing Evidence . . . . . . . . . . . . . . . . . . . . . . . 606 5.1599. 6.C-46 - Process Late Reports and Corrections . . . . . 606 5.1600. 6.C-47 - Preserve Reconstructible Closure History . . . 607 5.1601. 6.C-48 - Produce the Final C-V6 Reconstruction . . . . 607 5.1602. 6.C.8. Technical Invariants . . . . . . . . . . . . . 607 5.1603. C6-I06 - Function-local session identifiers are not globally unique without qualification. . . . . . . . . 607 5.1604. C6-I11 - Repeated release requests do not universally guarantee exactly-once effectuation. . . . . . . . . . 608 5.1605. C6-I21 - Complete cleanup requires the mandatory resource set, not merely one successful result. . . . . . . . . 608 5.1606. C6-I22 - Source and target transition operations may have required ordering constraints. . . . . . . . . . . . . 608 5.1607. C6-I25 - Final usage reports are interpreted under their actual reporting-rule semantics. . . . . . . . . . . . 608 5.1608. C6-I44 - The meaning of financial settlement is determined by its actual system contract. . . . . . . . 610 5.1609. C6-I47 - A demonstrated failed mandatory condition is distinct from an unknown condition. . . . . . . . . . . 610 5.1610. C6-I51 - A later correction may change an assessment without changing historical physical events. . . . . . 610 5.1611. C6-I52 - Source authentication does not establish completeness or current applicability. . . . . . . . . 610 5.1612. C6-I53 - The reconstruction engine does not independently authorize network remediation. . . . . . . . . . . . . 610 5.1613. C6-I54 - The reconstruction engine does not independently authorize billing corrections. . . . . . . . . . . . . 610 5.1614. 6.C.9. Mathematical Specification . . . . . . . . . . 610 5.1615. 6.C.9.1. Distributed Closure State . . . . . . . . . . 610 5.1616. 6.C.9.2. Closure Objective . . . . . . . . . . . . . . 611 Das Expires 3 May 2027 [Page 51] Internet-Draft Telecom Session Operational Consistency October 2026 5.1617. 6.C.9.3. Three-Valued Closure Logic . . . . . . . . . 611 5.1618. 6.C.9.4. Architecture-Qualified Closure Set . . . . . 611 5.1619. 6.C.9.5. Resource Cleanup . . . . . . . . . . . . . . 612 5.1620. 6.C.9.6. Local versus Global Release . . . . . . . . . 612 5.1621. 6.C.9.7. Unknown Remote Outcome . . . . . . . . . . . 612 5.1622. 6.C.9.8. Supported Partial Order . . . . . . . . . . . 613 5.1623. 6.C.9.9. Source and Target Resource Intervals . . . . 613 5.1624. 6.C.9.10. Measurement Coverage . . . . . . . . . . . . 613 5.1625. 6.C.9.11. Nonduplicative Usage . . . . . . . . . . . . 613 5.1626. 6.C.9.12. Cumulative Counter Derivation . . . . . . . 614 5.1627. 6.C.9.13. Charging Closure . . . . . . . . . . . . . . 614 5.1628. 6.C.9.14. Deferred Accounting Closure . . . . . . . . 614 5.1629. 6.C.9.15. Overall Closure Vector . . . . . . . . . . . 614 5.1630. 6.C.9.16. Recovery Revision . . . . . . . . . . . . . 615 5.1631. 6.C.9.17. Numerical Example - Partial Release . . . . 615 5.1632. 6.C.9.18. Numerical Example - Final Usage . . . . . . 615 5.1633. 6.C.9.19. Numerical Example - Deferred Charging . . . 616 5.1634. 6.C.10. Implementable Pseudocode - C-ALG-07 . . . . . 616 5.1635. 6.C.10.1. Core Types . . . . . . . . . . . . . . . . . 616 5.1636. 6.C.10.2. Qualify Release Scope . . . . . . . . . . . 617 5.1637. 6.C.10.3. Construct Required Closure Resources . . . . 617 5.1638. 6.C.10.4. Reconcile Release Operations . . . . . . . . 618 5.1639. 6.C.10.5. Evaluate Function Failure . . . . . . . . . 618 5.1640. 6.C.10.6. Evaluate Resource Cleanup . . . . . . . . . 619 5.1641. 6.C.10.7. Reconcile PFCP Release-Related Reports . . . 619 5.1642. 6.C.10.8. Derive Final Usage . . . . . . . . . . . . . 620 5.1643. 6.C.10.9. Reconcile Final Charging . . . . . . . . . . 621 5.1644. 6.C.10.10. Reconcile Accounting and Settlement . . . . 621 5.1645. 6.C.10.11. Evaluate Multidimensional Closure . . . . . 622 5.1646. 6.C.10.12. Complete Embodiment Algorithm . . . . . . . 622 5.1647. 6.C.11. Worked Technical Examples . . . . . . . . . . 624 5.1648. 6.C.11.1. Example 1 - V-SMF-Only Release . . . . . . . 624 5.1649. 6.C.11.2. Example 2 - Full Release with Remote Operator Unreachable . . . . . . . . . . . . . . . . . . . . . . 624 5.1650. 6.C.11.3. Example 3 - Release Applied but Response Lost . . . . . . . . . . . . . . . . . . . . . . . . . 624 5.1651. 6.C.11.4. Example 4 - Partial UPF Failure . . . . . . 625 5.1652. 6.C.11.5. Example 5 - PFCP Release with Final Usage . 625 5.1653. 6.C.11.6. Example 6 - No Nonzero Usage in Release Report . . . . . . . . . . . . . . . . . . . . . . . . 625 5.1654. 6.C.11.7. Example 7 - Three Resources, One Unknown . . 625 5.1655. 6.C.11.8. Example 8 - Stale Resource Database Entry . 626 5.1656. 6.C.11.9. Example 9 - Unexplained Resource Presence . 626 5.1657. 6.C.11.10. Example 10 - Replacement SMF . . . . . . . 626 5.1658. 6.C.11.11. Example 11 - Release Races with Modification . . . . . . . . . . . . . . . . . . . . . 626 5.1659. 6.C.11.12. Example 12 - Charging Release after Resource Cleanup . . . . . . . . . . . . . . . . . . . . . . . . 627 Das Expires 3 May 2027 [Page 52] Internet-Draft Telecom Session Operational Consistency October 2026 5.1660. 6.C.11.13. Example 13 - Charging Response Lost . . . . 627 5.1661. 6.C.11.14. Example 14 - Duplicate Final Usage . . . . 627 5.1662. 6.C.11.15. Example 15 - Final Report Overlaps Earlier Report . . . . . . . . . . . . . . . . . . . . . . . . 627 5.1663. 6.C.11.16. Example 16 - Counter Reset Before Release . . . . . . . . . . . . . . . . . . . . . . . . 627 5.1664. 6.C.11.17. Example 17 - Operational Closure, Accounting Pending . . . . . . . . . . . . . . . . . . . . . . . . 628 5.1665. 6.C.11.18. Example 18 - Charging Closed, Settlement Pending . . . . . . . . . . . . . . . . . . . . . . . . 628 5.1666. 6.C.11.19. Example 19 - Late CDR Transfer . . . . . . 628 5.1667. 6.C.11.20. Example 20 - Home and Visited Charging Information . . . . . . . . . . . . . . . . . . . . . . 628 5.1668. 6.C.11.21. Example 21 - Billing Correction after Session End . . . . . . . . . . . . . . . . . . . . . . . . . . 629 5.1669. 6.C.11.22. Example 22 - New Session as Compensation . 629 5.1670. 6.C.11.23. Example 23 - Empty Queue with Missing Remote Record . . . . . . . . . . . . . . . . . . . . . . . . 629 5.1671. 6.C.11.24. Example 24 - Mixed Final Closure Vector . . 629 5.1672. 6.C.12. Specific Design-Around Alternatives and Implementation Pathways . . . . . . . . . . . . . . . . 630 5.1673. C-6-DA-01 - Centralized Distributed-Closure Reconciler . . . . . . . . . . . . . . . . . . . . . . 630 5.1674. C-6-DA-02 - Federated Operator-Local Closure . . . . . 630 5.1675. C-6-DA-03 - Home-Centric Release Reconstruction . . . . 630 5.1676. C-6-DA-04 - Visited-Centric Release Reconstruction . . 631 5.1677. C-6-DA-05 - Architecture-Specific Release Model . . . . 631 5.1678. C-6-DA-06 - Local-versus-Full Release Interpreter . . . 631 5.1679. C-6-DA-07 - Event-Sourced Closure Reconstruction . . . 632 5.1680. C-6-DA-08 - Snapshot-and-Delta Closure Reconstruction . . . . . . . . . . . . . . . . . . . . 632 5.1681. C-6-DA-09 - Relational Closure-State Repository . . . . 632 5.1682. C-6-DA-10 - Graph-Based Closure Dependency Model . . . 633 5.1683. C-6-DA-11 - Constraint-Based Possible-State Reconstruction . . . . . . . . . . . . . . . . . . . . 633 5.1684. C-6-DA-12 - Partial-Order Release Reconstruction . . . 633 5.1685. C-6-DA-13 - Source-Generation-Aware Recovery . . . . . 633 5.1686. C-6-DA-14 - Lost-Response Release Reconciliation . . . 634 5.1687. C-6-DA-15 - Receiver-Native Retry Interpretation . . . 634 5.1688. C-6-DA-16 - UPF-Initiated Partial-Failure Release . . . 634 5.1689. C-6-DA-17 - Resource-by-Resource Cleanup Mechanism: Every mandatory resource has an independent cleanup verdict. 635 5.1690. C-6-DA-18 - Legitimate Retention Exception Mechanism: Procedure-allowed retained resources are excluded from the cleanup-required . . . . . . . . . . . . . . . . . . . 635 5.1691. C-6-DA-19 - Independent Resource-State Verification . . 635 5.1692. C-6-DA-20 - Recovery-Takeover Reconciliation . . . . . 636 Das Expires 3 May 2027 [Page 53] Internet-Draft Telecom Session Operational Consistency October 2026 5.1693. C-6-DA-21 - Release-versus-Modification Conflict Reconstruction . . . . . . . . . . . . . . . . . . . . 636 5.1694. C-6-DA-22 - PFCP Final Usage Correspondence Mechanism: Release-related usage reports are mapped to the correct original measurement. . . . . . . . . . . . . . . . . . 636 5.1695. C-6-DA-23 - Zero-versus-Missing Usage Classification Mechanism: Source-defined zero or absent measurements are distinguished from reporting . . . . . . . . . . . . . 637 5.1696. C-6-DA-24 - Duplicate and Corrected Final Usage . . . . 637 5.1697. C-6-DA-25 - Multi-UPF Final Measurement Reconciliation . . . . . . . . . . . . . . . . . . . . 637 5.1698. C-6-DA-26 - Charging-Session Release Reconstruction . . 638 5.1699. C-6-DA-27 - Charging Retry and Duplicate Protection Mechanism: Final charging retries are evaluated under the receiver's own contract. . . . . . . . . . . . . . . . 638 5.1700. C-6-DA-28 - Deferred CDR Transfer Reconciliation . . . 638 5.1701. C-6-DA-29 - Partial Record Lineage Mechanism: Partial and final charging records are associated with their proper record . . . . . . . . . . . . . . . . . . . . . . . . 638 5.1702. C-6-DA-30 - Deferred Interoperator Accounting Mechanism: Home and visited accounting records are reconciled under the actual settlement . . . . . . . . . . . . . . . . . 639 5.1703. C-6-DA-31 - Financial Settlement Status Adapter . . . . 639 5.1704. C-6-DA-32 - Historical Charging Correction Reconciliation . . . . . . . . . . . . . . . . . . . . 639 5.1705. C-6-DA-33 - Read-Only Closure Verifier . . . . . . . . 640 5.1706. C-6-DA-34 - Crash-Resilient Reconstruction . . . . . . 640 5.1707. C-6-DA-35 - Integrity-Protected Multi-Domain Evidence . . . . . . . . . . . . . . . . . . . . . . . 640 5.1708. C-6-DA-36 - Optional Hybrid Constraint and Dependency Optimization . . . . . . . . . . . . . . . . . . . . . 641 5.1709. 6.C.13. Technical Design-Around Correspondence . . . . 641 5.1710. 6.C.14. PHOSITA Reference Implementation . . . . . . . 642 5.1711. 6.C.15. Detailed PHOSITA Implementation Procedure Phase 1 - Session identities: Define logical, local-context, PFCP, charging, and resource . . . . . . . . . . . . . 644 5.1712. 6.C.16. Failure and Adversarial Conditions . . . . . . 647 5.1713. 6.C.17. Representative Proposed Verification Test Suite . . . . . . . . . . . . . . . . . . . . . . . . . 649 5.1714. Test ID . . . . . . . . . . . . . . . . . . . . . . . . 650 5.1715. Controlled scenario . . . . . . . . . . . . . . . . . . 650 5.1716. Expected technical behavior . . . . . . . . . . . . . . 650 5.1717. 6.C.18. Standards and Existing Technology Correspondence . . . . . . . . . . . . . . . . . . . . 658 5.1718. 6.C.18.7. Other Operator Charging Systems . . . . . . 659 5.1719. 6.C.19. Specific Claim-Supporting Relationships . . . 660 5.1720. Relationship 11 - Interoperator settlement uncertainty: Preserving incomplete . . . . . . . . . . . . . . . . . 661 Das Expires 3 May 2027 [Page 54] Internet-Draft Telecom Session Operational Consistency October 2026 5.1721. 6.C.20. Relationship to the Foundational Shared Technical Foundation . . . . . . . . . . . . . . . . . 661 5.1722. 6.C.21. Particular Technical Effects . . . . . . . . . 662 5.1723. 6.C.22. Non-Limiting Implementation Character . . . . 663 5.1724. 6.C.23. Conclusion . . . . . . . . . . . . . . . . . . 664 5.1725. This completes Embodiment 6.C and thereby concludes the six-embodiment Group C . . . . . . . . . . . . . . . . 664 6. Mathematical Formulation C-CW-01: Original Fourteen-Page Source . . . . . . . . . . . . . . . . . . . . . . . . . 665 6.1. Original Source Page 1 . . . . . . . . . . . . . . . . . 665 6.2. Original Source Page 2 . . . . . . . . . . . . . . . . . 666 6.3. Original Source Page 3 . . . . . . . . . . . . . . . . . 667 6.4. Original Source Page 4 . . . . . . . . . . . . . . . . . 669 6.5. Original Source Page 5 . . . . . . . . . . . . . . . . . 670 6.6. Original Source Page 6 . . . . . . . . . . . . . . . . . 671 6.7. Original Source Page 7 . . . . . . . . . . . . . . . . . 672 6.8. Original Source Page 8 . . . . . . . . . . . . . . . . . 673 6.9. Original Source Page 9 . . . . . . . . . . . . . . . . . 674 6.10. Original Source Page 10 . . . . . . . . . . . . . . . . . 676 6.11. Original Source Page 11 . . . . . . . . . . . . . . . . . 677 6.12. Original Source Page 12 . . . . . . . . . . . . . . . . . 678 6.13. Original Source Page 13 . . . . . . . . . . . . . . . . . 679 6.14. Original Source Page 14 . . . . . . . . . . . . . . . . . 680 7. Source-Derived RFCXML Workflow Diagrams and Detailed Interpretation . . . . . . . . . . . . . . . . . . . . . 682 7.1. C-FIG-01: Evidence and session identity / Stages 01-06 . 683 7.2. C-FIG-02: Subscriber trust and purpose / Stages 07-12 . . 685 7.3. C-FIG-03: Roaming and serving state / Stages 13-18 . . . 686 7.4. C-FIG-04: Programmable QoD and resources / Stages 19-24 . . . . . . . . . . . . . . . . . . . . . . . . . . 687 7.5. C-FIG-05: Usage and charging lineage / Stages 25-30 . . . 688 7.6. C-FIG-06: Scoped consistency verdict / Stages 31-34 . . . 690 7.7. C-FIG-07: Failure recovery and revision / Stages 35-38 . 691 7.8. C-FIG-08: End-to-End Concurrent Evidence Branches . . . . 692 8. Industry and Standards Alignment and Illustrative Future Implementation Workflows . . . . . . . . . . . . . . . . 693 8.1. Session trust and programmable resource assurance . . . . 693 8.2. Roaming outage recovery . . . . . . . . . . . . . . . . . 693 8.3. Concurrent network service capacity . . . . . . . . . . . 694 8.4. Metering and charging reconciliation . . . . . . . . . . 694 8.5. Long-running autonomous network management . . . . . . . 694 9. Forty Individually Searchable Group C Technical Implementation Checkpoints . . . . . . . . . . . . . . . . . . . . . . . 694 9.1. C-CP-081: Complete lifecycle evidence reconstruction . . 695 9.2. C-CP-082: Subscriber trust versus surviving session . . . 695 9.3. C-CP-083: Roaming serving context and partial release . . 695 9.4. C-CP-084: Concurrent programmable QoD lifecycle . . . . . 696 9.5. C-CP-085: User-plane usage and charging lineage . . . . . 696 Das Expires 3 May 2027 [Page 55] Internet-Draft Telecom Session Operational Consistency October 2026 9.6. C-CP-086: Purpose-scoped consent and effect timing . . . 696 9.7. C-CP-087: Partial operator outage and historical reconciliation . . . . . . . . . . . . . . . . . . . . . 697 9.8. C-CP-088: Operation and attempt namespace identity . . . 697 9.9. C-CP-089: Typed service evidence dependency graph . . . . 697 9.10. C-CP-090: Objective-specific mandatory predicates . . . . 698 9.11. C-CP-091: Compatible possible states under incomplete evidence . . . . . . . . . . . . . . . . . . . . . . . . 698 9.12. C-CP-092: Late arrival and versioned assessment correction . . . . . . . . . . . . . . . . . . . . . . . 698 9.13. C-CP-093: Source-scoped SIM or eSIM change meaning . . . 699 9.14. C-CP-094: Subscription-session-anchor lineage . . . . . . 699 9.15. C-CP-095: Live session versus subscriber trust state . . 699 9.16. C-CP-096: Overlapping trust effective-time window . . . . 700 9.17. C-CP-097: Prospective policy reevaluation without rewriting traffic . . . . . . . . . . . . . . . . . . . . . . . . 700 9.18. C-CP-098: Home-routed versus local-breakout roaming . . . 700 9.19. C-CP-099: Local context release interpretation . . . . . 701 9.20. C-CP-100: Late visited release occurrence time . . . . . 701 9.21. C-CP-101: Old/new serving context continuity . . . . . . 701 9.22. C-CP-102: Operator-responsibility and function role scope . . . . . . . . . . . . . . . . . . . . . . . . . 702 9.23. C-CP-103: Programmable service API status contract . . . 702 9.24. C-CP-104: Bounded service-duration extension . . . . . . 702 9.25. C-CP-105: Concurrent attempt and idempotency distinction . . . . . . . . . . . . . . . . . . . . . . 703 9.26. C-CP-106: Requested, granted, reserved and installed resources . . . . . . . . . . . . . . . . . . . . . . . 703 9.27. C-CP-107: Shared capacity and concurrent reservation . . 703 9.28. C-CP-108: PFCP usage reporting source and generation . . 704 9.29. C-CP-109: Comparable cumulative-counter increments . . . 704 9.30. C-CP-110: Disjoint multi-source usage populations . . . . 704 9.31. C-CP-111: Many-to-many metering-charge association . . . 705 9.32. C-CP-112: Financial recording, invoice and settlement distinction . . . . . . . . . . . . . . . . . . . . . . 705 9.33. C-CP-113: Purpose and subject-generation scoping . . . . 705 9.34. C-CP-114: Independent session, consent, resource and meter states . . . . . . . . . . . . . . . . . . . . . . . . . 706 9.35. C-CP-115: Late usage-report event time . . . . . . . . . 706 9.36. C-CP-116: Explicit exception and alternate-purpose contract . . . . . . . . . . . . . . . . . . . . . . . . 706 9.37. C-CP-117: Partial failure scoped source reachability . . 707 9.38. C-CP-118: Recovered source generation and delayed record lineage . . . . . . . . . . . . . . . . . . . . . . . . 707 9.39. C-CP-119: Deferred cleanup, accounting and settlement obligations . . . . . . . . . . . . . . . . . . . . . . 707 9.40. C-CP-120: Separate protected execution and actual downstream outcome . . . . . . . . . . . . . . . . . . . 708 Das Expires 3 May 2027 [Page 56] Internet-Draft Telecom Session Operational Consistency October 2026 10. Relationship to the Other Parts: Technical Integration and Reasons to Read . . . . . . . . . . . . . . . . . . . . . 708 10.1. Part 01 — Foundational evidence identity, tri-state results, temporal continuity, and operational authorization distinctions . . . . . . . . . . . . . . . . . . . . . 709 10.2. Part 02 — Radio input applicability and control-result qualification before a service or resource decision . . 709 10.3. Part 03 — Distributed fault evidence and verified recovery where a session failure leads to remediation . . . . . 709 10.4. Part 04 — This specialist session/resource/usage/charging continuity disclosure . . . . . . . . . . . . . . . . . 710 10.5. Part 05 — Device and network-effect evidence when installed configuration alone cannot show an actual effect . . . . . . . . . . . . . . . . . . . . . . . . 710 10.6. Part 06 — Multi-agent agreement versions for delegated network service operations . . . . . . . . . . . . . . 710 10.7. Part 07 — Asynchronous callbacks and late results associated with original service operation identity . . 711 10.8. Part 08 — Physical robotic actuation depending on connectivity, communications, or remote control assurances . . . . . . . . . . . . . . . . . . . . . . 711 10.9. Part 09 — Semantics and actual delivery of emergency operational messages over communications systems . . . 711 10.10. Part 10 — Operator-interface state when control is exercised through web-based management . . . . . . . . 712 10.11. Part 11 — Long-running operation continuity across agent or execution-context relocation . . . . . . . . . . . . 712 10.12. Part 12 — Commercial monetary commitments distinct from metering, rating, billing, and settlement . . . . . . . 712 10.13. Part 13 — Device-consumed command and descriptor generations underlying packet and network effects . . . 713 10.14. Part 14 — Protected operation boundary and post-effect reconstruction for network change commands . . . . . . 713 10.15. Part 15 — Delegated authority and effect continuity across interfaces and administrative domains . . . . . . . . . 713 11. Security Considerations . . . . . . . . . . . . . . . . . . . 714 12. Privacy Considerations . . . . . . . . . . . . . . . . . . . 714 13. Implementation Feasibility, Resource Overhead and Analytical Expected Latency . . . . . . . . . . . . . . . . . . . . 714 13.1. Observation-only deployment . . . . . . . . . . . . . . 715 13.2. Cross-operator deployment . . . . . . . . . . . . . . . 715 13.3. Usage/charging deployment . . . . . . . . . . . . . . . 715 13.4. Separate protected-effect integration . . . . . . . . . 715 14. Threat Model, Adversarial Manipulation, and Difficult Edge Cases . . . . . . . . . . . . . . . . . . . . . . . . . . 715 14.1. 1. Replayed session state . . . . . . . . . . . . . . . 715 14.2. 2. Forged trust update . . . . . . . . . . . . . . . . 716 14.3. 3. Stale roaming anchor . . . . . . . . . . . . . . . . 716 Das Expires 3 May 2027 [Page 57] Internet-Draft Telecom Session Operational Consistency October 2026 14.4. 4. Incomplete observer coverage . . . . . . . . . . . . 716 14.5. 5. Subscription-to-session alias reuse . . . . . . . . 716 14.6. 6. API request racing with deletion . . . . . . . . . . 716 14.7. 7. QoD status confusion . . . . . . . . . . . . . . . . 716 14.8. 8. Duplicate usage receipt . . . . . . . . . . . . . . 717 14.9. 9. Counter reset without epoch . . . . . . . . . . . . 717 14.10. 10. Overlapping URR populations . . . . . . . . . . . . 717 14.11. 11. Delayed financial correction . . . . . . . . . . . 717 14.12. 12. Settlement confusion . . . . . . . . . . . . . . . 717 14.13. 13. Clock skew at consent transition . . . . . . . . . 717 14.14. 14. Partial operator outage . . . . . . . . . . . . . . 718 14.15. 15. Recovery-time duplicate effect . . . . . . . . . . 718 14.16. 16. Unqualified resumption authority . . . . . . . . . 718 14.17. 17. Unobservable alternate effect path . . . . . . . . 718 14.18. 18. Conflict by concurrent state changes . . . . . . . 718 14.19. 19. Scope overstatement . . . . . . . . . . . . . . . . 718 14.20. 20. Privacy and retention . . . . . . . . . . . . . . . 719 15. Runnable Python Laboratory: Test Coverage, Measured Local Latency, and Reproducibility . . . . . . . . . . . . . . 719 15.1. Reference Python source: telecom_consistency.py . . . . 720 15.2. Reference Python source: test_telecom_consistency.py . . 726 15.3. Reference Python source: benchmark.py . . . . . . . . . 729 16. Proposed Verification Tests and Analytical Cost Model . . . . 730 16.1. Test state distinctions . . . . . . . . . . . . . . . . 730 16.2. Test roaming history . . . . . . . . . . . . . . . . . . 730 16.3. Test metering . . . . . . . . . . . . . . . . . . . . . 731 16.4. Test billing . . . . . . . . . . . . . . . . . . . . . . 731 16.5. Test uncertain effects . . . . . . . . . . . . . . . . . 731 16.6. Analytical model (not measured) . . . . . . . . . . . . 731 17. Checkpoint Coverage and Reproducibility Recheck (30 October 2026) . . . . . . . . . . . . . . . . . . . . . . . . . . 731 17.1. Further Integration Verification Required . . . . . . . 732 17.2. Measured Synthetic Evaluator Timing and Reproduction Scope . . . . . . . . . . . . . . . . . . . . . . . . . 732 18. Document Status and Source Limitations . . . . . . . . . . . 733 Appendix A. Source and Editorial Notes . . . . . . . . . . . . . 733 Appendix B. Detailed Python Laboratory Test Record (30 October 2026) . . . . . . . . . . . . . . . . . . . . . . . . . . 734 B.1. Laboratory Summary . . . . . . . . . . . . . . . . . . . 734 B.2. Reproduction Commands . . . . . . . . . . . . . . . . . . 735 B.3. Test Categories Executed . . . . . . . . . . . . . . . . 735 B.4. Complete Inventory of Executed Test Methods . . . . . . . 737 B.5. Measured Evaluator Latency (Recheck Run) . . . . . . . . 738 B.6. Checkpoints Without Executable Analogue and Untested Areas . . . . . . . . . . . . . . . . . . . . . . . . . . 739 B.7. Status and Invitation for Technical Criticism . . . . . . 740 Author's Address . . . . . . . . . . . . . . . . . . . . . . . . 740 Das Expires 3 May 2027 [Page 58] Internet-Draft Telecom Session Operational Consistency October 2026 1. Scope, Technical Distinctions, and Reader Guidance This is Part 04 of 15 and the specialist description of GROUP C. It preserves the Group C technical description as supplied, with separate mathematical and figure-source sections. Source excerpts are engineering disclosure, not assertions of implementation, deployment, measurement, or conformance. The evaluation subject is correspondence among separately scoped facts. Source identity, subscriber trust, session existence, access to programmable service interfaces, network resource reservation, installed resources, measured user-plane effects, charging records, and financial settlement are not interchangeable states. The original source specifically distinguishes evidence-qualified operational consistency from separately required permission to execute a network change. A positive assessment cannot be substituted for independent enforcement. The six embodiments and 40 numbered Group C technical checkpoints remain allocated here; other parts provide independent specialist disclosures. Anticipated series links may not resolve until documents are posted. Shared evidence semantics and the distinction between qualified observations and independent authority are described in Part 01: Foundational evidence consistency profiles (https://datatracker.ietf.org/doc/draft-das-ai-safety-evidence- consistency-profiles/). Group C is an independent specialist profile and does not imply a single common physical enforcement mechanism across telecom, silicon and robot systems. 2. Implementable Group C Architecture and State Contracts 2.1. Operation and Entity Identity Bind each logical operation to a source-qualified namespace, attempt or generation, initiating actor, operation category, session identity, resource identity, and relevant time interval. Treat reused identifiers as potentially different instances. 2.2. Trust, Session, and Operator Contexts Maintain subscriber provisioning or trust events separately from packet-data sessions, serving function contexts, home-network anchors, and operator-specific role assignments. Reconstruct local and global transition semantics with source-qualified evidence. Das Expires 3 May 2027 [Page 59] Internet-Draft Telecom Session Operational Consistency October 2026 2.3. Programmable Service and Installed Resource State Distinguish requested service, interface status, accepted terms, active reservations, installation status, observed user-plane performance, and eventual release. Qualify interleavings among creation, extension, expiration, and deletion. 2.4. Usage, Charging, and Settlement Normalize cumulative, incremental, and threshold-triggered reports according to counter generations, reporting intervals, source contracts, and reset or wrap semantics. Distinguish usage, charging event, record revision, invoice and settlement. 2.5. Uncertainty and Outcomes For every declared evaluation objective, classify all mandatory predicates. Established contradiction yields INCONSISTENT; proof of every mandatory predicate yields CONSISTENT within the declared scope; missing evidence yields UNRESOLVED absent contradiction. 2.6. Security and Independent Control Keep observation and accounting reconstruction distinct from an independently authorized consequential effect boundary; verify current authority and actual pending operation where that separate enforcement architecture is deployed. 3. Conventional Solutions, Technical Problem Space, and Why Additional Correspondence Checks Matter Subscriber management, roaming state machines, programmable service interfaces, user-plane metering, charging systems, and transactional ledgers each have valid but different consistency guarantees. A protocol-correct response from one component establishes only the meaning assigned by that component. This profile evaluates whether the observation spans the full operation-specific lifecycle scope without treating the components as a single atomic database or assuming that every operator deployment uses an identical architecture. 3.1. 1. Trust notification is not global session teardown Conventional solution and limitation: A SIM or subscription trust signal may affect future policy, but existing session anchors and user-plane resources can persist. Das Expires 3 May 2027 [Page 60] Internet-Draft Telecom Session Operational Consistency October 2026 Proposed additional correspondence mechanism: Resolve subscriber and session generations, event effective time and live network state separately; report unknown closure when no qualified release evidence exists. Scope: the mechanism is an evidence-qualification and reconstruction operation. It does not silently replace a standardized network function, protected control gate or authoritative charging ledger. 3.2. 2. Local serving-context release is not global session release Conventional solution and limitation: In a roaming deployment, a visited function can release a context while a home-side anchor or new serving context remains valid. Proposed additional correspondence mechanism: Use home/visited roles and architecture-specific closure requirements; do not conflate function-local and full-session states. Scope: the mechanism is an evidence-qualification and reconstruction operation. It does not silently replace a standardized network function, protected control gate or authoritative charging ledger. 3.3. 3. Remote operator observations are not an atomic snapshot Conventional solution and limitation: A roaming transition can be observed at different clock domains, delivery times or source restarts. Proposed additional correspondence mechanism: Evaluate bounded occurrence intervals and causal relationships; retain possible continuity states when ordering is unknown. Scope: the mechanism is an evidence-qualification and reconstruction operation. It does not silently replace a standardized network function, protected control gate or authoritative charging ledger. 3.4. 4. API acceptance is not installed resource state Conventional solution and limitation: Programmable QoD interfaces return lifecycle status under their own contract; installation, reservation and actual user-plane performance are separate facts. Proposed additional correspondence mechanism: Correlate request generation, installed resource observation, capacity reservation and measured service outcomes independently. Das Expires 3 May 2027 [Page 61] Internet-Draft Telecom Session Operational Consistency October 2026 Scope: the mechanism is an evidence-qualification and reconstruction operation. It does not silently replace a standardized network function, protected control gate or authoritative charging ledger. 3.5. 5. Concurrent extension and deletion can race Conventional solution and limitation: A duration extension can be eligible against an old snapshot but become inapplicable after deletion, expiry or another reservation. Proposed additional correspondence mechanism: Track attempts, operation order or unknown order, current resource generation and material precondition changes. Scope: the mechanism is an evidence-qualification and reconstruction operation. It does not silently replace a standardized network function, protected control gate or authoritative charging ledger. 3.6. 6. Counters are not automatically additive Conventional solution and limitation: User-plane usage reporting can mix cumulative and delta values, duplicates, resets and overlapping traffic populations. Proposed additional correspondence mechanism: Qualify source and rule generation, reporting semantics, reset evidence, nonoverlapping partitions and source-specific intervals. Scope: the mechanism is an evidence-qualification and reconstruction operation. It does not silently replace a standardized network function, protected control gate or authoritative charging ledger. 3.7. 7. A recorded charge is not a settled financial obligation Conventional solution and limitation: Charging requests, rating, invoicing, reversals and completed settlements are stages with different evidence providers. Proposed additional correspondence mechanism: Track event/record lineage and financial stage; maintain unresolved settlement even when a charge record closes. Scope: the mechanism is an evidence-qualification and reconstruction operation. It does not silently replace a standardized network function, protected control gate or authoritative charging ledger. Das Expires 3 May 2027 [Page 62] Internet-Draft Telecom Session Operational Consistency October 2026 3.8. 8. Consent revisions do not rewrite history Conventional solution and limitation: An effective-time withdrawal can precede or follow a measured service effect, whereas the report may arrive much later. Proposed additional correspondence mechanism: Compare effect occurrence intervals against consent and policy revisions, not receipt-time ordering. Scope: the mechanism is an evidence-qualification and reconstruction operation. It does not silently replace a standardized network function, protected control gate or authoritative charging ledger. 3.9. 9. Operator outage leaves deferred duties Conventional solution and limitation: Network function recovery may restore reachability while resource cleanup, usage reports or charges remain pending. Proposed additional correspondence mechanism: Keep independently addressable deferred obligations; reconcile late events under original epochs and revise prior scoped conclusions. Scope: the mechanism is an evidence-qualification and reconstruction operation. It does not silently replace a standardized network function, protected control gate or authoritative charging ledger. 3.10. 10. Duplicate API calls are not proven idempotent Conventional solution and limitation: Shared request labels can describe multiple consequential attempts after retries or failures. Proposed additional correspondence mechanism: Bind logical operation, generation, submission attempt and receiving-system idempotency contract; unresolved prior effects remain liabilities. Scope: the mechanism is an evidence-qualification and reconstruction operation. It does not silently replace a standardized network function, protected control gate or authoritative charging ledger. 3.11. 11. An observed service target does not prove causal attribution Conventional solution and limitation: A service may improve after several concurrent operations or unrelated topology changes. Proposed additional correspondence mechanism: Distinguish observed outcome from attribution to a particular nominated operation. Das Expires 3 May 2027 [Page 63] Internet-Draft Telecom Session Operational Consistency October 2026 Scope: the mechanism is an evidence-qualification and reconstruction operation. It does not silently replace a standardized network function, protected control gate or authoritative charging ledger. 3.12. 12. Syntactically valid event data is not necessarily applicable evidence Conventional solution and limitation: Transport security or successful decoding cannot prove source observation coverage, identity generation, or applicability to the intended operation. Proposed additional correspondence mechanism: Use per-object source contracts, mandatory properties, time and state dependencies; fail to UNRESOLVED for missing mandatory evidence. Scope: the mechanism is an evidence-qualification and reconstruction operation. It does not silently replace a standardized network function, protected control gate or authoritative charging ledger. 4. Implementable Source-Qualified Lifecycle Architecture and Distinct Guarantees 4.1. Minimum input interface Each observation record carries source namespace, source generation, original event identity, subscriber or service reference, applicable resource generation, observed stage, event-occurrence interval or causal relationship, and the source-defined semantics of the event. Not all fields exist in every deployment; missing mandatory discriminators keep the specific comparison unresolved. 4.2. Identity and event continuity Resolve subscriber identity separately from session, service, operator role, meter and charging record identities; use qualified historical mappings for original event time and avoid assuming that a reused string identifies an earlier resource generation. 4.3. Three-valued evidence aggregation Each operation-specific mandatory predicate is SUPPORTED, CONTRADICTED or UNRESOLVED. A demonstrated mandatory contradiction dominates; otherwise missing mandatory proof yields UNRESOLVED; all mandatory properties established yield a scoped positive result. Nonrequired properties are not silently imposed. Das Expires 3 May 2027 [Page 64] Internet-Draft Telecom Session Operational Consistency October 2026 4.4. Typed state and artifact interfaces A separate state record exists for trust applicability, PDU session continuity, programmable service API status, reserved resource, installed resource, measured service effect, usage partition, charge event, invoice and settlement. A transition of one type cannot be substituted for an observation of another. 4.5. Asynchronous reconciliation Persist source-qualified original event IDs, versions, event time, causal relationships and correction references. Revisions recompute only affected dependency edges and do not erase known historical network effects. 4.6. Authority boundary This profile is non-actuating. If an implementation also performs consequential network modifications, it must invoke a separately specified authority and actual-pending-operation control at the relevant boundary. Technical consistency, decision to authorize, admission, and independently proven external outcome are different results. 5. Group C Unabridged Technical Specification: C-CW-01 and Embodiments 1.C through 6.C The following content follows the source sequence for Group C without merging its six embodiments. Formatting-only normalization converts Markdown into RFCXML paragraphs and subsections; source designations remain visible. 5.1. INVENTION GROUP C - PROGRAMMABLE TELECOMMUNICATIONS SESSION LIFECYCLE AND CROSS-OPERATOR OPERATIONAL-STATE CONSISTENCY 5.2. COMMON WORKFLOW C-CW-01 Technical Title: Systems and Methods for Maintaining Session- Lifecycle Correspondence Across Versioned Subscriber State, Operator Transitions, Programmable Service Conditions, Network Resource Effects, and Accounting Records. Common Workflow Identifier: C-CW-01. Common Algorithm Identifier: C-ALG-01. Invention Group: C - Programmable Telecom Session Lifecycle. Das Expires 3 May 2027 [Page 65] Internet-Draft Telecom Session Operational Consistency October 2026 Workflow Type: Cross-domain operational-state reconstruction, lifecycle-transition evaluation, and session-outcome reconciliation. 5.3. 7.C.1. General Technical Subject This technical profile describes a telecommunications session- lifecycle processing arrangement in which a logical communication or connectivity session is associated with multiple time-dependent network, subscriber, service, operator, resource, and accounting states. The arrangement determines whether those states correspond to the same applicable session lifecycle and whether a proposed or observed lifecycle transition is supported by the available operational evidence. A telecommunications session may be established under one subscriber profile, access configuration, network operator, service condition, or charging context. During the lifetime of the session, one or more of those governing conditions may change. For example: | x | the device or subscription association may change; | |---|---| | x | a subscriber profile may be updated; | | x | the serving operator may change during roaming; | | x | the applicable service profile may be modified; | | x | an application- facing session may be extended; | | x | a network resource allocation may be reduced or released; | | x | an API quota may be consumed concurrently; | | x | a subscriber may withdraw consent for a particular processing purpose; | |---|---| | x | a charging system may receive delayed usage reports; or | | x | a network operator may become temporarily unreachable. | A conventional logical session identifier may remain unchanged across some of these transitions. However, persistence of the identifier does not necessarily establish that every earlier subscriber, resource, charging, or operator-state assumption remains applicable. Das Expires 3 May 2027 [Page 66] Internet-Draft Telecom Session Operational Consistency October 2026 The present group addresses the technical correspondence among these changing states. In an illustrative deployment, a session-management function, programmable service component, network resource manager, and charging function may each maintain a representation of one or more aspects of an active session. These representations may have different identifiers, update times, persistence semantics, and operational responsibilities. The disclosed procedure associates them through supported correspondence information and evaluates the effects of relevant changes. The system may determine that a session can continue under an updated service state, requires a supported modification, has entered a restricted or unresolved lifecycle condition, is being transferred between operator contexts, or has terminated with accounting and resource cleanup still outstanding. The procedure does not assume that all related components participate in one global atomic transaction. It does not assume that a session-control acknowledgement proves corresponding user-plane behavior. It does not assume that service termination necessarily coincides with final charging settlement. It does not assume that a state-change notification from one operator automatically establishes the resulting state in another operator. The arrangement may operate in mobile networks, fixed-mobile systems, network-slice services, programmable quality-of-service sessions, IP multimedia services, private telecommunications networks, hybrid satellite-terrestrial networks, or other communication environments in which a session persists across changes in operational conditions. The specific standards and session representations used are non- limiting. 5.4. 7.C.2. Relationship to the Other Invention Groups Das Expires 3 May 2027 [Page 67] Internet-Draft Telecom Session Operational Consistency October 2026 5.5. 7.C.2.1. Boundary with Group A Invention Group A addresses distributed radio observations and the consistency of control decisions derived from heterogeneous network measurements. Group C is not directed primarily to radio measurement ordering, beam state, radio-resource assignment, or radio controller failover. A radio-side observation may provide evidence relevant to a session, but the present group concerns whether a telecommunications session's governing state, resource effects, and lifecycle records correspond to one another. For example, a device mobility event may be observed by radio or mobility functions. Group C evaluates the resulting session-lifecycle implications without repeating Group A's measurement reconstruction algorithm. 5.6. 7.C.2.2. Boundary with Group B Invention Group B addresses multiagent network incident identification, diagnosis, intervention, recovery, and verification. Group C does not require that an incident has occurred. A subscriber-profile update, roaming transition, service expiry, or consent change may be part of normal session operation. The system may process those conditions even when the network is functioning correctly. If a change produces a network incident, Group B may separately analyze the fault. 5.7. 7.C.2.3. Boundary with Earlier Execution-Finality Disclosures The cross-domain foundation and companion profiles are relevant only where their identity, trust-boundary, current-state, and observable- effect contracts apply. The Group C evidence qualification by itself neither authorizes a new network effect nor establishes financial settlement. The present group does not claim generic session authorization, a network exposure gateway, application-programming-interface access control, or the mere checking of consent and subscription permissions as newly invented. Das Expires 3 May 2027 [Page 68] Internet-Draft Telecom Session Operational Consistency October 2026 Its distinct subject is the correspondence of multiple operational representations of an evolving session and the reconstruction of which lifecycle states and effects are actually established. Where authority or permission is required, the system may reference the separately applicable existing mechanisms. A lifecycle result is not itself a newly defined permission to cause network effects. 5.8. 7.C.3. Particular Technical Problem Space 7.C.3.1. Logical Session Continuity Does Not Establish Governing- State Continuity An active communication session may retain its logical identifier while the subscriber profile, serving operator, QoS conditions, or available resources change. A session-management record may indicate that the session exists. That record alone does not prove that every associated policy or operational assumption remains current. The processor must associate the session with the relevant versions or effective-state intervals of its governing conditions. 5.9. 7.C.3.2. Different Functions May Observe the Same Transition at Different Times A policy function may receive a subscription update before a session- management component processes it. A user-plane function may continue enforcing its previous forwarding or QoS rules while the control plane prepares a modification. A charging function may receive associated usage information later. The resulting state cannot be represented reliably as one universal instantaneous transition without additional guarantees. 5.10. 7.C.3.3. A Requested Modification Is Not an Applied Resource Change A programmable session may request a new QoS profile. Das Expires 3 May 2027 [Page 69] Internet-Draft Telecom Session Operational Consistency October 2026 An API response may indicate that the request was accepted. The corresponding network resources may be pending, partially established, unavailable, or operating under an alternative policy. The processor distinguishes the requested service state from the state actually supported by network-resource evidence. 7.C.3.4. Subscriber-State Changes May Have Different Effects on Different Services A subscription update may modify one entitlement while leaving another unaffected. A device-association or trust-related event may have a different technical meaning from a service-profile expiry. The system shall not assume that every subscriber-state change requires termination of every session. It determines the applicable service dependencies and transition rules. 5.11. 7.C.3.5. SIM-Related Events May Not Identify a Single Session Transition A SIM or device-association event may be reported by a separate fraud, subscriber, or deviceinformation system. Such an event may describe a subscriber-account association change, a physical or embedded SIM event, or another specifically defined condition. It does not automatically establish that a particular active data session was terminated or transferred. The processor needs supported subscriber-session correspondence and event semantics. 5.12. 7.C.3.6. Roaming May Change the Applicable Operational Context A device may move from one serving network context to another. The home and visited operators may maintain distinct records of session or service state. Das Expires 3 May 2027 [Page 70] Internet-Draft Telecom Session Operational Consistency October 2026 Certain deployment architectures may preserve a home-routed service path, while others may use local breakout or different session arrangements. The processor must interpret the actual roaming and session architecture. It shall not assume that every roaming event transfers the same session-control responsibilities or creates a new session identifier. 5.13. 7.C.3.7. Operator Handoffs May Be Partially Visible A home operator may know a subscriber's home-side state. A visited operator may observe access and serving-network conditions. An application provider may observe only a programmable API-session reference. The system may need to reconcile these representations without having full internal visibility into every operator. It may retain abstract interoperator relationships when internal detail is unavailable. 5.14. 7.C.3.8. Concurrent API Requests May Affect Shared Resource or Usage State Two API consumers may attempt to extend or modify services affecting the same underlying subscriber, operator, or network allocation. The operations may have independent request identifiers but overlap in their operational effects. The present group considers how the resulting session and usage states are reconstructed. It does not introduce a new generic shared-quota enforcement primitive. 5.15. 7.C.3.9. Quota Reservation and Actual Consumption May Differ An application may reserve a quantity of service capacity or a usage budget. The network may consume a smaller or larger amount under the applicable accounting model. Das Expires 3 May 2027 [Page 71] Internet-Draft Telecom Session Operational Consistency October 2026 Some reservations may expire or be released. A delayed usage report may arrive after a reservation or session has ended. The processor distinguishes reserved, reported, accounted, and released quantities according to their actual meanings. 5.16. 7.C.3.10. Service Effects and Charging Records May Have Different Timing A session may cease carrying traffic before final charging information becomes available. A charging record may arrive after the network resource has been released. Conversely, an accounting report may cover usage that occurred while a session was active but be transmitted after the session was terminated. The processor must interpret event time and report time separately. 5.17. 7.C.3.11. Usage Reports May Be Duplicated or Incomplete A charging or usage source may retransmit a record following a communication interruption. Another report may contain an aggregate or cumulative value rather than an independent usage increment. Adding every received value may overstate consumption. The processor must evaluate source identity, measurement interval, counter semantics, and accounting-record correspondence. 5.18. 7.C.3.12. Consent Withdrawal May Occur During an Active Session A subscriber or authorized party may change the applicable consent state. The new consent state may concern particular processing purposes or data uses. It does not automatically mean that every connectivity service or all network-layer traffic must terminate. Das Expires 3 May 2027 [Page 72] Internet-Draft Telecom Session Operational Consistency October 2026 The system determines which session functions depend upon the changed consent condition and which observed effects remain outstanding. Any related enforcement remains subject to applicable law, policy, and separate authority controls. 5.19. 7.C.3.13. A Session May Have Multiple Simultaneous Lifecycle Dimensions A logical session may be: | x | present in a session database; | |---|---| | x | pending network modification; | | x | active in a user-plane function; | | x | limited by a changed service condition; | | x | subject to a pending charging update; and | | x | awaiting final resource release. | A single ACTIVE or CLOSED flag cannot always capture these independent dimensions. The processor represents the relevant components separately. 5.20. 7.C.3.14. Session Termination May Not Complete Cleanup A logical session may be marked terminated while: | x | user-plane rules remain temporarily installed; | |---|---| | x | a programmable QoS resource remains allocated; | | x | usage reports remain outstanding; | | x | an interoperator settlement reference remains open; or | | x | a remote operator's cleanup result is unknown. | The system must distinguish logical termination from completion of each applicable cleanup obligation. 5.21. 7.C.3.15. Remote Failure May Conceal Applied Changes A session-management request may succeed at a remote function before the response is lost. Blindly repeating a non-idempotent modification can create unintended effects. The processor interprets the receiver's native operation and retry semantics. A local timeout does not prove remote nonapplication. Das Expires 3 May 2027 [Page 73] Internet-Draft Telecom Session Operational Consistency October 2026 5.22. 7.C.3.16. Cross-Operator State Versions May Be Incomparable An operator may use a monotonically increasing version inside one database. Another operator may use a different revision namespace. A larger numerical version from one operator does not necessarily describe a later state than a smaller version from another. The processor maintains version scope and relies on supported cross- domain transition evidence. 5.23. 7.C.3.17. Resource Reallocation May Leave Accounting State Unchanged A network may modify the user-plane path while preserving the logical session and charging continuity. A system that assumes every resource-instance change creates a new billable session may produce duplicate accounting. The processor distinguishes service continuity from the identities of particular resource allocations. 5.24. 7.C.3.18. Session Continuity May Be Preserved Despite a Change in Serving Infrastructure A session may move to a new function instance or path. The original function may become unavailable. The logical session may nevertheless continue under an applicable continuity mechanism. The system must not automatically equate infrastructure replacement with session termination. 5.25. 7.C.3.19. A Session May Terminate During an Interoperator Failure An operator may release its local session state while the remote operator is unreachable. The remote state may remain unresolved. The processor must not assert that the remote resource was released solely because the local operator completed its own procedure. Das Expires 3 May 2027 [Page 74] Internet-Draft Telecom Session Operational Consistency October 2026 5.26. 7.C.3.20. Final Accounting May Require More Evidence Than Final Resource Release A network may establish that resources were released. However, final usage reconciliation may still require a report covering the last usage interval. The lifecycle result may therefore be resource-released/accounting- pending. The system need not keep a network resource allocated solely because accounting is incomplete. 5.27. 7.C.3.21. External APIs May Expose a Simplified Session View A programmable network API may expose one service-session state to an application. Its internal realization may involve multiple network elements. The API-facing state shall be interpreted according to its documented meaning, not as evidence that every internal resource has reached the same state. 5.28. 7.C.3.22. Session Lifecycle Decisions Must Be Reconstructible When a session is modified, continued, limited, or ended, the system should retain the applicable evidence and version relationships needed to explain the observed transition. The required reconstruction record may include subscriber-state, operator, resource, and accounting references. It need not reproduce a protected execution-finality ledger. 5.29. 7.C.4. Common Technical Processing Relationship The common workflow maintains a correspondence among six principal dimensions. First - Logical session identity. The processor determines which session or session instance is under examination, including its applicable namespace and lifecycle generation. Das Expires 3 May 2027 [Page 75] Internet-Draft Telecom Session Operational Consistency October 2026 Second - Governing subscriber and service state. The processor identifies the relevant versioned conditions upon which the session's service behavior depends. Third - Operator and mobility context. The processor determines which operator and network functions are relevant to the session at the applicable stage of its lifecycle. Fourth - Network-resource state. The processor determines the requested, accepted, configured, and observed effects on the resources supporting the session. Fifth - Usage and accounting state. The processor associates measured usage and charging records with the corresponding session periods and resource effects. Sixth - Lifecycle transition and settlement. The processor determines whether session continuation, modification, transfer, restriction, release, or final settlement is established under the applicable source and operational guarantees. The procedure may produce an unresolved result in one dimension while another dimension is conclusively established. For example, the network resource may be released while a final usage report remains unavailable. The processor does not merge these facts into an unsupported universal complete state. 5.30. 7.C.5. Representative System Components 5.31. 7.C.5.1. Session Identity Resolver The resolver associates logical session references with their applicable service, subscriber, network function, and resource- instance contexts. Das Expires 3 May 2027 [Page 76] Internet-Draft Telecom Session Operational Consistency October 2026 It distinguishes logical session continuity from the generation of an individual control or user-plane resource. 5.32. 7.C.5.2. Subscriber-State Context Interface This interface obtains the applicable subscriber and service information from supported sources. It may include relevant subscription, device association, service profile, or consent-state references. It does not establish subscriber identity merely from an unverified external claim. 5.33. 7.C.5.3. Session State Repository The repository maintains the session's known lifecycle and state relationships. It may contain versioned snapshots, transition records, or both. The repository records unresolved source information rather than assuming complete global state. 5.34. 7.C.5.4. Operator Context Resolver This component identifies the relevant home, visited, serving, or other applicable operator roles. It records their scope and correspondence without assuming that every operator exposes the same session information. 5.35. 7.C.5.5. Service Condition Evaluator The evaluator determines the technical conditions relevant to the active session. It may identify profile, QoS, service-period, resource, or subscriber-state dependencies. It is separate from any protected authorization check that governs whether a corresponding consequential operation may be performed. 5.36. 7.C.5.6. Network Resource Correspondence Interface The interface obtains network resource state associated with the session. Das Expires 3 May 2027 [Page 77] Internet-Draft Telecom Session Operational Consistency October 2026 It may include user-plane rules, QoS allocations, virtual resources, service endpoints, or other applicable supporting infrastructure. 5.37. 7.C.5.7. Lifecycle Transition Evaluator The evaluator determines which transition options are compatible with the available state and the supported network procedures. It may identify continued operation, modification, transfer, restriction, release, or unresolved state. 5.38. 7.C.5.8. Asynchronous Operation State Tracker The tracker maintains known transmission, acceptance, application, and unknown outcomes of session-lifecycle operations. It interprets acknowledgements under the relevant receiving-interface contract. 5.39. 7.C.5.9. Cross-Operator Correspondence Service The service relates session and resource information exposed by participating operators. It may operate using complete resource mappings or abstract boundary- level information. 5.40. 7.C.5.10. Usage and Accounting Reconciler The reconciler associates usage reports, charging references, and reserved or released quantities with the relevant session intervals. It distinguishes record delivery from measurement occurrence and final settlement. 5.41. 7.C.5.11. Resource Release Reconciler This component identifies which resources are established as released and which remain active or unresolved. It does not assume that session deletion in one function proves resource deletion in every supporting function. 5.42. 7.C.5.12. Session Continuity and Recovery Interface The interface obtains relevant state when a controller, operator- facing service, or network function fails or is replaced. Das Expires 3 May 2027 [Page 78] Internet-Draft Telecom Session Operational Consistency October 2026 It distinguishes resumption of an existing logical session from establishment of a new session. 5.43. 7.C.5.13. Lifecycle Evidence Repository The repository maintains source-qualified session events, resource effects, operator context, accounting records, and evaluation revisions. It supports later reconstruction and examination of incomplete transitions. 5.44. 7.C.5.14. Optional Existing Protected Enforcement Interface Where the deployment includes a separate protected effectuation system, the session-lifecycle processor may provide its technical findings to that system. The existing enforcement system independently determines whether consequential changes may occur. 5.45. 7.C.6. Necessary Local Definitions The later compact Master Definitions section remains the primary location for genuinely nonstandard terminology. The following descriptions are provided only to make the present group implementable. 5.46. 7.C.6.1. Session-Lifecycle Correspondence A session-lifecycle correspondence is the technically established relationship between one logical session and the subscriber, operator, resource, service, and accounting states relevant to a particular phase of its operation. It does not require all component states to change simultaneously. 5.47. 7.C.6.2. Governing-Condition Revision A governing-condition revision identifies an applicable change to a subscriber, service, operator, or other condition relevant to the session's technical operation. It includes sufficient source and context information to determine its applicability. Das Expires 3 May 2027 [Page 79] Internet-Draft Telecom Session Operational Consistency October 2026 5.48. 7.C.6.3. Session-State Reconstruction Session-state reconstruction determines which lifecycle conditions and effects are supported by available source and operational evidence. Where information is incomplete, the reconstruction may represent several possible states. 5.49. 7.C.6.4. Lifecycle Transition Correspondence Lifecycle transition correspondence evaluates whether the observed or proposed session transition is compatible with the applicable preceding state, governing conditions, and required resulting effects. 5.50. 7.C.6.5. Session Resource Correspondence Session resource correspondence associates a logical session with the network resources and resource generations that implement its service. It does not imply that a session has exactly one physical or logical supporting resource. 5.51. 7.C.6.6. Session Accounting Correspondence Session accounting correspondence associates usage, reservation, charging, and settlement records with the relevant session identity, interval, and measurement semantics. 5.52. 7.C.6.7. Settlement Completeness Settlement completeness describes whether all accounting and resource-state closure conditions required by the selected lifecycle model are established. It does not mean that an external commercial or financial dispute has been conclusively resolved. 5.53. 7.C.7. Representative Data Structures 5.54. 7.C.7.1. Logical Session Record TelecomSession: Das Expires 3 May 2027 [Page 80] Internet-Draft Telecom Session Operational Consistency October 2026 logical\_session\_id session\_namespace session\_generation subscriber\_reference service\_reference device\_or\_subscription\_context home\_operator\_reference serving\_operator\_reference active\_network\_function\_references applicable\_service\_profile relevant\_subscription\_revision policy\_context\_reference network\_resource\_references usage\_and\_charging\_references current\_lifecycle\_assessment unresolved\_conditions The logical session identifier is not assumed globally unique without its namespace. 5.55. 7.C.7.2. Session Governing-Condition Record SessionGoverningCondition: condition\_id source\_system source\_generation condition\_type affected\_subscriber\_or\_service applicable\_session\_scope source\_revision effective\_time\_or\_state\_context previous\_condition\_reference current\_condition\_reference measurement\_or\_event\_semantics evidence\_reference applicability\_status 5.56. 7.C.7.3. Operator Context Record OperatorSessionContext: operator\_context\_id operator\_role operator\_namespace local\_session\_reference remote\_session\_correspondence serving\_resource\_references routing\_or\_breakout\_model applicable\_state\_interval exposed\_status internal\_visibility\_limitations source\_evidence\_references 5.57. 7.C.7.4. Session Resource State SessionResourceState: resource\_reference resource\_generation associated\_logical\_session resource\_type desired\_or\_requested\_state receiver\_accepted\_state configured\_state observed\_operational\_state usage\_reporting\_state release\_status state\_source applicable\_interval unresolved\_conditions 5.58. 7.C.7.5. Session Lifecycle Operation SessionLifecycleOperation: Das Expires 3 May 2027 [Page 81] Internet-Draft Telecom Session Operational Consistency October 2026 operation\_reference logical\_session\_reference operation\_type initiating\_source receiving\_function requested\_change applicable\_preconditions original\_request\_parameters receiver\_contract submission\_evidence acceptance\_evidence application\_evidence observed\_resource\_effects retry\_or\_status\_reference outcome\_status 5.59. 7.C.7.6. Usage and Accounting Record SessionAccountingRecord: accounting\_record\_id issuing\_function source\_generation logical\_session\_correspondence local\_accounting\_session\_reference resource\_or\_flow\_reference usage\_measurement\_type measurement\_interval counter\_or\_increment\_semantics measured\_quantity reservation\_reference charging\_reference aggregation\_or\_derivation\_reference report\_delivery\_context settlement\_status uncertainty\_or\_gap\_information 5.60. 7.C.7.7. Lifecycle Transition Assessment LifecycleTransitionAssessment: assessment\_id logical\_session\_reference original\_state\_reference governing\_condition\_change operator\_context relevant\_resources relevant\_accounting\_periods transition\_candidates required\_state\_predicates outstanding\_operations known\_resulting\_effects unknown\_resulting\_effects transition\_verdict assessment\_revision 5.61. 7.C.7.8. Session Closure Record SessionClosure: logical\_session\_reference closure\_initiation\_reference logical\_termination\_status user\_plane\_release\_status service\_resource\_release\_status outstanding\_usage\_reports accounting\_reconciliation\_status interoperator\_status pending\_remote\_operations unresolved\_state\_obligations closure\_assessment closure\_revision The record can represent resource release as complete while final accounting remains pending. Das Expires 3 May 2027 [Page 82] Internet-Draft Telecom Session Operational Consistency October 2026 5.62. 7.C.8. Common Workflow C-CW-01 - Detailed Operational Procedure The following 38 steps describe the common process applicable across the six Group C embodiments. Each embodiment introduces its own specific variation and supporting implementation mechanisms. 5.63. C-CW-01.01 - Receive or Identify the Session Establishment Context The processor obtains a session establishment event, existing session reference, or lifecycle reconstruction request. It identifies the relevant service and network context. It does not independently assert that session authorization has been granted merely because an establishment request exists. Output: Candidate session context. 5.64. C-CW-01.02 - Resolve Logical Session Identity The processor determines the applicable session identifier, namespace, and generation. It distinguishes the logical session from particular network resource or control-function instances. Output: Session identity context. 5.65. C-CW-01.03 - Associate Subscriber or Service Context The processor obtains the relevant subscriber and service references from supported sources. It identifies which information is applicable to the session and which is not. Output: Subscriber-service correspondence. 5.66. C-CW-01.04 - Establish the Initial Governing-Condition State The system identifies the relevant subscription, service-profile, operator, and other applicable condition revisions. It records their effective-state semantics. Das Expires 3 May 2027 [Page 83] Internet-Draft Telecom Session Operational Consistency October 2026 Output: Initial governing-condition context. 5.67. C-CW-01.05 - Establish Operator Responsibilities The processor identifies the applicable home, serving, visited, or other operator roles under the session architecture. It does not assume that every session uses the same roaming or local- breakout arrangement. Output: Operator context. 5.68. C-CW-01.06 - Associate Supporting Network Resources The system associates the session with its available network-resource references. These may include user-plane rules, QoS resources, service instances, or other technical components. Output: Session resource correspondence. 5.69. C-CW-01.07 - Identify Accounting and Usage Context The processor obtains the relevant accounting or usage-session references, where applicable. It records the measurement semantics and accounting interval relationships. Output: Accounting context. 5.70. C-CW-01.08 - Construct Initial Session State The processor assembles the supported logical, subscriber, operator, resource, and accounting dimensions. Unresolved components remain explicitly represented. Output: Initial reconstructed session state. 5.71. C-CW-01.09 - Observe a Governing-Condition Change The system obtains a relevant session, subscriber, operator, service, consent, resource, or accounting event. The source and applicable meaning are retained. Das Expires 3 May 2027 [Page 84] Internet-Draft Telecom Session Operational Consistency October 2026 Output: Candidate lifecycle event. 5.72. C-CW-01.10 - Resolve Event Identity and Source Generation The processor determines whether the event represents a new occurrence, duplicate delivery, correction, or replay. It applies the source's actual identity and generation semantics. Output: Source-qualified event. 5.73. C-CW-01.11 - Determine Event-Time Applicability The system identifies the event's applicable effective interval or ordering relationship. It distinguishes source event time from collector arrival time. Output: Temporal context. 5.74. C-CW-01.12 - Determine the Affected Session Scope The processor identifies which active or historical sessions may be affected. A subscriber-wide event does not automatically mean every service session has the same transition requirement. Output: Affected session set. 5.75. C-CW-01.13 - Evaluate Governing-State Correspondence The processor determines whether the new condition replaces, supplements, or is otherwise related to the session's previous applicable condition. It uses the source-specific version and state semantics. Output: Condition-revision relationship. 5.76. C-CW-01.14 - Identify Current Operator and Resource State The processor obtains available operator and network-resource information relevant to the change. It records discrepancies between logical and observed states. Output: Current state assessment. Das Expires 3 May 2027 [Page 85] Internet-Draft Telecom Session Operational Consistency October 2026 5.77. C-CW-01.15 - Identify Outstanding Session Operations The system identifies known operations that are pending, accepted, partially applied, or unresolved. These may include QoS modifications, resource releases, or session transfers. Output: Outstanding operation context. 5.78. C-CW-01.16 - Construct Candidate Lifecycle Transitions The processor identifies supported transition possibilities, including: | x | continued session operation; | |---|---| | x | session modification; | | x | service restriction; | | x | operator-context update; | | x | resource reassignment; | | x | logical session replacement; | | x | session release; or | | x | unresolved transition. | Output: Candidate transition set. 5.79. C-CW-01.17 - Evaluate Session Identity Continuity The processor determines whether the transition preserves the logical session identity or requires a new session instance under the applicable system semantics. It does not equate change of one user-plane resource with logical session replacement. Output: Session identity-continuity result. 5.80. C-CW-01.18 - Evaluate Subscriber and Service-State Applicability The system checks the technical service conditions affected by the event. It determines which session functions or resources depend upon those conditions. Output: Service-state compatibility. Das Expires 3 May 2027 [Page 86] Internet-Draft Telecom Session Operational Consistency October 2026 5.81. C-CW-01.19 - Evaluate Operator-Context Correspondence Where the change involves a serving network or operator role, the processor identifies the required cross-operator references and transition conditions. It preserves unresolved boundary information where necessary. Output: Operator transition correspondence. 5.82. C-CW-01.20 - Evaluate Resource Modification Requirements The system identifies which resources must be changed, preserved, reallocated, or released to satisfy the selected transition. It distinguishes an intended modification from observed applied resource state. Output: Resource-transition requirements. 5.83. C-CW-01.21 - Evaluate Usage and Reservation Implications The processor determines how the transition affects usage records, reservations, accounting intervals, and outstanding measurements. It distinguishes allocation from actual measured consumption. Output: Accounting-transition requirements. 5.84. C-CW-01.22 - Evaluate Concurrent Lifecycle Operations The system identifies overlapping modifications, extensions, releases, or interoperator transitions. It evaluates their technical dependencies and the receiving interfaces' actual guarantees. Output: Concurrent-operation compatibility. 5.85. C-CW-01.23 - Determine the Applicable Transition Preconditions The processor combines the mandatory state and correspondence predicates for each candidate transition. It classifies them as established, violated, or unresolved. Output: Candidate feasibility assessments. Das Expires 3 May 2027 [Page 87] Internet-Draft Telecom Session Operational Consistency October 2026 5.86. C-CW-01.24 - Select or Retain a Qualified Transition Candidate Where one or more candidates satisfy the required conditions, the system identifies a technically applicable transition. Where evidence is incomplete, it retains unresolved alternatives. Selection does not independently confer authority to execute the operation. Output: Qualified lifecycle transition. 5.87. C-CW-01.25 - Associate the Operation with Existing Effectuation Controls Where the transition requires consequential network changes, the system supplies the corresponding operation specification to the separately applicable authorization and effectuation mechanisms. The present workflow does not replace those mechanisms. Output: Transition operation specification. 5.88. C-CW-01.26 - Observe Operation Submission and Acceptance The processor obtains the available receiving-interface status. It distinguishes local transmission, accepted processing, and rejected requests. Output: Operation lifecycle evidence. 5.89. C-CW-01.27 - Observe Applied Network-Resource Effects The processor obtains available resource-state information relevant to the requested transition. It does not infer complete network application merely from receiver acceptance. Output: Applied-state correspondence. 5.90. C-CW-01.28 - Reconcile Unknown or Partial Transition Outcomes Where the result of an operation is not established, the processor retains relevant possible states. Das Expires 3 May 2027 [Page 88] Internet-Draft Telecom Session Operational Consistency October 2026 It may seek status or resource evidence under the available interface contracts. Output: Qualified resulting state. 5.91. C-CW-01.29 - Reconcile Operator-Side State For cross-operator transitions, the processor determines which local and remote states are established. A local acknowledgement is not assumed sufficient to establish a remote user-plane effect unless its documented semantics justify that conclusion. Output: Cross-operator transition assessment. 5.92. C-CW-01.30 - Reconcile Usage Reports The processor associates received usage information with the appropriate session, resource, measurement interval, and source generation. It detects known duplicates and incompatible counter interpretations. Output: Qualified usage state. 5.93. C-CW-01.31 - Reconcile Accounting and Reservation State The system determines the relationships among measured consumption, reserved quantities, releases, and charging records. It does not assume that every record represents a new independent increment. Output: Accounting correspondence. 5.94. C-CW-01.32 - Determine Whether Session Continuation Is Established The processor evaluates whether the logical session and the required operational conditions remain applicable after the transition. The result may identify continued service, modified service, restricted service, or unresolved continuity. Output: Continuation assessment. Das Expires 3 May 2027 [Page 89] Internet-Draft Telecom Session Operational Consistency October 2026 5.95. C-CW-01.33 - Evaluate Session Termination Conditions Where release or termination is relevant, the processor identifies the applicable logical and resource-state requirements. It distinguishes termination request, accepted termination, logical termination, and observed resource release. Output: Termination assessment. 5.96. C-CW-01.34 - Reconcile Outstanding Resource Cleanup The processor identifies supporting resources that remain allocated or whose release is uncertain. It does not automatically treat a terminated logical session as proof of complete cleanup. Output: Resource cleanup status. 5.97. C-CW-01.35 - Reconcile Final Usage and Settlement Information The system evaluates whether accounting records satisfy the required coverage and finalization conditions. It may identify resource-released/accounting-pending as a valid intermediate lifecycle outcome. Output: Settlement completeness assessment. 5.98. C-CW-01.36 - Reevaluate Following a Material State Change The processor identifies whether subsequent subscriber, operator, resource, or accounting events invalidate an earlier lifecycle assessment. It selectively reevaluates affected relationships where dependency coverage is adequate. Output: Revised lifecycle assessment. 5.99. C-CW-01.37 - Preserve Session-Lifecycle Reconstruction Evidence The processor records relevant versions, observations, state transitions, usage reports, unresolved conditions, and source dependencies. Das Expires 3 May 2027 [Page 90] Internet-Draft Telecom Session Operational Consistency October 2026 This record supports later reconstruction and may be retained independently of a protected execution ledger. Output: Reconstructible session history. 5.100. C-CW-01.38 - Produce the Final Lifecycle Correspondence Result The system provides the established logical session state, applicable operator and subscriber context, resource state, accounting status, unresolved transitions, and closure or continuation status. The output is suitable for subsequent monitoring, network-management, service administration, or accounting reconciliation. Output: C-CW-01 lifecycle consistency result. 5.101. 7.C.9. Common Workflow State Model A telecommunications session is represented as a vector of related states rather than one universal status flag. A representative structure is: SessionLifecycleState: logical\_session\_state subscriber\_context\_state service\_condition\_state operator\_context\_state control\_plane\_session\_state user\_plane\_resource\_state programmable\_api\_session\_state usage\_measurement\_state accounting\_state release\_or\_cleanup\_state evidence\_completeness Each state dimension has its own source and semantics. For example: logical\_session\_state user\_plane\_resource\_state = RELEASED programmable\_api\_state usage\_measurement\_state accounting\_state cleanup\_state = TERMINATED = TERMINATED = FINAL\_REPORT\_PENDING = UNRESOLVED = PARTIALLY\_COMPLETE This combination is not internally contradictory merely because the logical session has terminated. Das Expires 3 May 2027 [Page 91] Internet-Draft Telecom Session Operational Consistency October 2026 It describes a lifecycle in which resource release is established but some accounting or cleanup information remains outstanding. Similarly: logical\_session\_state service\_condition\_state control\_plane\_state user\_plane\_resource\_state = PREVIOUS\_STATE\_OBSERVED accounting\_state = CONTINUING = UPDATED = MODIFICATION\_ACCEPTED = CONTINUING may represent a session modification whose control-plane request has been accepted while the intended user-plane effect has not yet been established. The specific enumeration values are illustrative. An implementation may use the existing states defined by its telecommunications protocols and expose the corresponding source- qualified relationships. 5.102. 7.C.10. Common Technical Invariants C-I01 - Logical session existence does not prove all associated resources are active. C-I02 - A session identifier is interpreted within its namespace and generation. C-I03 - Subscriber-state continuity and session continuity are distinct. 5.103. C-I04 - An operator transition does not automatically imply logical session replacement. 5.104. C-I05 - Logical session continuation does not automatically establish unchanged governing conditions. C-I06 - A requested QoS modification is not proof of applied QoS behavior. C-I07 - Receiver acceptance does not necessarily establish user-plane application. C-I08 - A resource change does not necessarily establish a new billable session. Das Expires 3 May 2027 [Page 92] Internet-Draft Telecom Session Operational Consistency October 2026 C-I09 - A charging record does not automatically prove the relevant resource remains active. C-I10 - Resource release does not necessarily establish final accounting settlement. C-I11 - Local operator completion does not automatically establish remote operator completion. 5.105. C-I12 - Numeric versions are not compared across unrelated version namespaces without justified mapping. C-I13 - A source event's arrival time does not automatically establish its effective time. 5.106. C-I14 - Repeated delivery of one usage report does not automatically represent repeated usage. C-I15 - Counter differences require compatible counter generations and measurement semantics. C-I16 - Reserved quantities and consumed quantities are distinct. C-I17 - An expired reservation does not itself prove zero prior consumption. C-I18 - A consent-state change is interpreted within its actual scope and effective conditions. 5.107. C-I19 - A subscriber-wide change does not automatically affect every session identically. 5.108. C-I20 - A SIM-related event does not automatically establish termination of an existing data session. C-I21 - Roaming state depends upon the actual home/visited operator architecture. C-I22 - A hidden operator-internal state is not invented from an abstract boundary report. C-I23 - A lost response does not establish remote operation failure. C-I24 - A retry identifier does not automatically guarantee idempotency. C-I25 - A local session database cannot universally establish external user-plane state. Das Expires 3 May 2027 [Page 93] Internet-Draft Telecom Session Operational Consistency October 2026 C-I26 - Complete cleanup may require distinct resource and accounting conditions. C-I27 - Source identity reuse does not automatically preserve event ordering. C-I28 - An unknown mandatory lifecycle condition cannot silently become true. C-I29 - An established contradictory condition is not merely missing information. 5.109. C-I30 - A lifecycle transition may preserve some state dimensions while changing others. C-I31 - A session's historical state may remain correct after later operator or service changes. C-I32 - An authentic record may be stale or incomplete. C-I33 - A source history may be complete for reporting but incomplete for physical fault detection. 5.110. C-I34 - Session state reconstruction does not automatically provide operational authorization. C-I35 - A selected lifecycle operation remains subject to existing applicable authority and effectuation controls. C-I36 - A bounded reconstruction timeout does not prove that no consistent session state exists. C-I37 - The existence of one compatible reconstruction does not necessarily establish uniqueness. C-I38 - Accounting adjustments must be interpreted according to their actual record and settlement semantics. C-I39 - Physical network state, subscriber state, and commercial settlement may reach terminal conditions at different times. 5.111. C-I40 - No implementation guarantee extends beyond its actual source, receiver, operator, and accounting contracts. Das Expires 3 May 2027 [Page 94] Internet-Draft Telecom Session Operational Consistency October 2026 5.112. 7.C.11. Mathematical Formulation - Common Workflow Overview The detailed mathematical formulation for Group C shall be maintained as a separate document, with at least six A4 pages and the Group C/ C-CW-01 identification on every page. The following equations identify the principal mathematics relevant to the common workflow. They are illustrative and non-limiting. 5.113. 7.C.11.1. Session State Vector Define: [ S(t)= \\left( L(t),G(t),O(t),R(t),U(t),A(t),Q(t) \\right) ] where: | x | (L(t)) is the logical session state; | |---|---| | x | (G(t)) is the applicable governing-condition state; | | x | (O(t)) is the operator context; | | x | (R(t)) is the network-resource state; | | x | (U(t)) is the usage measurement state; | | x | (A(t)) is the accounting state; | | x | (Q(t)) is the available evidence and uncertainty representation. | The components are not assumed to change atomically. 5.114. 7.C.11.2. Governing-Condition Applicability For condition (g) and session (s), define: [ \\operatorname{Applicable}(g,s,t)\\in{T,F,U}. ] The predicate determines whether the condition is established as relevant to the session under the selected model. An unknown result does not become false solely because the source has not delivered a new event. 5.115. 7.C.11.3. Transition Compatibility For candidate lifecycle transition (a), let: \\bigwedge\_{p\\in P\_a}p(S) ] where (P\_a) is the set of mandatory transition preconditions. Das Expires 3 May 2027 [Page 95] Internet-Draft Telecom Session Operational Consistency October 2026 Each predicate is evaluated using three-valued logic. A mandatory false condition establishes incompatibility. An unresolved mandatory condition prevents an unqualified compatible conclusion unless an independent false condition has already established incompatibility. 5.116. 7.C.11.4. State Continuity Under Resource Replacement Let logical session (s) be associated with resource (r\_1) before a transition and (r\_2) afterward. The correspondence: [ s\\leftrightarrow r\_1 ] followed by: [ s\\leftrightarrow r\_2 ] does not, by itself, prove that (s) was terminated and recreated. The logical session identity and continuity semantics must be independently evaluated. 5.117. 7.C.11.5. Usage Interval Correspondence Let usage report (u\_i) describe measurement interval: [ I\_i=[t\_i^-,t\_i^+]. ] Let session (s) be applicable over interval (I\_s). A usage report can be associated with the session only when the source identity, resource mapping, and temporal conditions are sufficiently established. Overlap alone may not establish that all measured usage belongs to the same session. 5.118. 7.C.11.6. Cumulative Counter Difference Suppose a source provides cumulative counters (c\_1) and (c\_2). An increment estimate may be: [ \\Delta c=c\_2-c\_1 ] Das Expires 3 May 2027 [Page 96] Internet-Draft Telecom Session Operational Consistency October 2026 only when the counter identity, generation, ordering, rollover behavior, and measurement semantics support the subtraction. A source restart or counter reset may invalidate the simple difference. 5.119. 7.C.11.7. Reservation and Consumption Let: | x | (B) represent a defined usage or resource budget; | |---|---| | x | (R) represent an outstanding reserved quantity; | | x | (C) represent accounted consumption. | Under one illustrative nonoverlapping accounting model, a limit may be represented as: [ R+C\\leq B. ] This formula is not universally valid for every charging or reservation system. The deployment must define whether reservations and consumption overlap, replace one another, or use separate accounting scopes. The present workflow does not introduce a new shared-quota authorization mechanism. 5.120. 7.C.11.8. Cross-Operator State Correspondence Let: [ X(s,o\_1,o\_2,t)\\in{T,F,U} ] represent whether the relevant session relationship between operator contexts (o\_1) and (o\_2) is established under the applicable source information. The predicate may remain unresolved where only an abstract boundary status is visible. 5.121. 7.C.11.9. Session Closure Let: Das Expires 3 May 2027 [Page 97] Internet-Draft Telecom Session Operational Consistency October 2026 | x | (L_c): logical termination established; | |---|---| | x | (R_c): required resource cleanup established; | | x | (U_c): required usage-report coverage established; | | x | (A_c): required accounting finalization established. | A strict full-closure objective may require: L\_c\\land R\_c\\land U\_c\\land A\_c. ] A narrower resource-closure objective may require only: L\_c\\land R\_c. ] The selected objective must be stated. Failure to establish final accounting does not automatically mean a resource remains allocated. 5.122. 7.C.11.10. Lifecycle Evidence Reconciliation Let (E) be the available evidence set and (M) the applicable session- lifecycle model. Define: {S\\text{ satisfies all established evidence and mandatory model constraints}}. ] The result may contain one state, several possible states, or be inconsistent under the model. An empty state set may indicate conflicting evidence or model assumptions. It is not automatically proof that the physical session cannot exist. 5.123. 7.C.12. Detailed Implementable Pseudocode - C-ALG-01 5.124. 7.C.12.1. Core Types ENUM Verdict: COMPATIBLE INCOMPATIBLE UNRESOLVED ENUM LifecycleDimension: LOGICAL\_SESSION SUBSCRIBER\_CONTEXT SERVICE\_CONDITION Das Expires 3 May 2027 [Page 98] Internet-Draft Telecom Session Operational Consistency October 2026 OPERATOR\_CONTEXT CONTROL\_PLANE USER\_PLANE USAGE\_MEASUREMENT ACCOUNTING RESOURCE\_CLEANUP TYPE SessionContext: logical\_session\_id namespace generation subscriber\_reference service\_reference operator\_references governing\_conditions resource\_references accounting\_references lifecycle\_evidence unresolved\_conditions TYPE LifecycleEvent: source\_identity source\_generation event\_identity affected\_session\_scope condition\_type condition\_revision effective\_context evidence\_reference TYPE TransitionCandidate: transition\_type required\_preconditions affected\_state\_dimensions intended\_resource\_changes operator\_dependencies accounting\_dependencies expected\_effects unresolved\_conditions 5.125. 7.C.12.2. Establish the Initial Session Context FUNCTION ESTABLISH\_SESSION\_CONTEXT( session\_reference, subscriber\_sources, operator\_sources, resource\_sources, accounting\_sources ): identity = RESOLVE\_SESSION\_NAMESPACE\_AND\_GENERATION( session\_reference ) subscriber = LOAD\_APPLICABLE\_SUBSCRIBER\_CONTEXT( identity, subscriber\_sources ) operators = RESOLVE\_OPERATOR\_ROLES( identity, operator\_sources ) resources = RESOLVE\_SUPPORTING\_RESOURCES( identity, resource\_sources ) accounting = RESOLVE\_ACCOUNTING\_REFERENCES( identity, accounting\_sources ) Das Expires 3 May 2027 [Page 99] Internet-Draft Telecom Session Operational Consistency October 2026 RETURN BUILD\_QUALIFIED\_SESSION\_CONTEXT( identity, subscriber, operators, resources, accounting ) 5.126. 7.C.12.3. Qualify a Governing-Condition Event FUNCTION QUALIFY\_LIFECYCLE\_EVENT( event, session\_context, source\_registry ): source = RESOLVE\_SOURCE\_GENERATION( event, source\_registry ) occurrence = CHECK\_SOURCE\_EVENT\_IDENTITY( event, source ) scope = CHECK\_SESSION\_APPLICABILITY( event, session\_context ) temporal = RESOLVE\_EFFECTIVE\_CONTEXT( event, source ) revision = COMPARE\_SOURCE\_SCOPED\_REVISION( event, session\_context ) IF any mandatory condition incompatible: RETURN INCOMPATIBLE IF any mandatory condition unresolved: RETURN UNRESOLVED RETURN COMPATIBLE( occurrence, scope, temporal, revision ) 5.127. 7.C.12.4. Generate Candidate Lifecycle Transitions FUNCTION GENERATE\_LIFECYCLE\_TRANSITIONS( session\_context, governing\_event, transition\_rules ): Das Expires 3 May 2027 [Page 100] Internet-Draft Telecom Session Operational Consistency October 2026 affected\_dimensions = FIND\_AFFECTED\_SESSION\_DIMENSIONS( governing\_event, session\_context ) candidates = [] FOR EACH applicable\_rule IN transition\_rules: IF applicable\_rule concerns affected\_dimensions: ADD BUILD\_TRANSITION\_CANDIDATE( applicable\_rule, session\_context, governing\_event ) TO candidates RETURN candidates The rules represent the applicable deployment and standards semantics. They are not newly defined generic session-authority rules. 5.128. 7.C.12.5. Evaluate a Transition Candidate FUNCTION EVALUATE\_LIFECYCLE\_TRANSITION( candidate, session\_context, resource\_evidence, operator\_evidence ): governing = CHECK\_GOVERNING\_CONDITIONS( candidate, session\_context ) operator = CHECK\_OPERATOR\_CORRESPONDENCE( candidate, operator\_evidence ) resource = CHECK\_RESOURCE\_STATE\_REQUIREMENTS( candidate, resource\_evidence ) pending = CHECK\_OUTSTANDING\_OPERATIONS( candidate, session\_context ) Das Expires 3 May 2027 [Page 101] Internet-Draft Telecom Session Operational Consistency October 2026 accounting = CHECK\_ACCOUNTING\_DEPENDENCIES( candidate, session\_context ) results = [ governing, operator, resource, pending, accounting ] IF any mandatory result == INCOMPATIBLE: RETURN INCOMPATIBLE IF any mandatory result == UNRESOLVED: RETURN UNRESOLVED RETURN COMPATIBLE 5.129. 7.C.12.6. Reconcile Asynchronous Effects FUNCTION RECONCILE\_SESSION\_OPERATION( operation, receiver\_contract, available\_evidence ): transport = INTERPRET\_TRANSPORT\_STATUS( available\_evidence ) acceptance = INTERPRET\_RECEIVER\_ACCEPTANCE( available\_evidence, receiver\_contract ) application = INTERPRET\_APPLIED\_RESOURCE\_STATE( available\_evidence ) IF application established: RETURN APPLIED\_UNDER\_SUPPORTED\_SCOPE IF rejection conclusively established: RETURN REJECTED\_UNDER\_SUPPORTED\_SCOPE IF partial application established: Das Expires 3 May 2027 [Page 102] Internet-Draft Telecom Session Operational Consistency October 2026 RETURN PARTIALLY\_APPLIED RETURN OUTCOME\_UNKNOWN 5.130. 7.C.12.7. Reconcile Usage and Accounting FUNCTION RECONCILE\_SESSION\_ACCOUNTING( session\_context, usage\_records, accounting\_contract ): normalized = [] FOR EACH usage\_record IN usage\_records: identity = CHECK\_USAGE\_RECORD\_IDENTITY( usage\_record ) interval = CHECK\_USAGE\_INTERVAL\_AND\_RESOURCE( usage\_record, session\_context ) semantics = CHECK\_COUNTER\_OR\_INCREMENT\_MEANING( usage\_record ) ancestry = CHECK\_DUPLICATE\_OR\_DERIVED\_REPORT( usage\_record ) ADD QUALIFIED\_RECORD( identity, interval, semantics, ancestry ) TO normalized return RECONCILE\_UNDER\_ACCOUNTING\_CONTRACT( normalized, accounting\_contract ) A cumulative quantity is not simply added to every other cumulative report. 5.131. 7.C.12.8. Reconcile Cross-Operator State FUNCTION RECONCILE\_OPERATOR\_SESSION\_STATE( logical\_session, home\_context, visited\_context, boundary\_evidence ): correspondence = CHECK\_OPERATOR\_BOUNDARY\_MAPPING( Das Expires 3 May 2027 [Page 103] Internet-Draft Telecom Session Operational Consistency October 2026 home\_context, visited\_context, boundary\_evidence ) applicability = CHECK\_APPLICABLE\_ROAMING\_MODEL( logical\_session ) local\_state = EVALUATE\_HOME\_OR\_LOCAL\_STATE( home\_context ) remote\_state = EVALUATE\_REMOTE\_EXPOSED\_STATE( visited\_context ) RETURN BUILD\_QUALIFIED\_CROSS\_OPERATOR\_RESULT( correspondence, applicability, local\_state, remote\_state ) 5.132. 7.C.12.9. Determine Session Closure FUNCTION EVALUATE\_SESSION\_CLOSURE( session\_context, release\_evidence, accounting\_evidence, closure\_objective ): logical = CHECK\_LOGICAL\_TERMINATION( session\_context ) resources = CHECK\_REQUIRED\_RESOURCE\_RELEASE( release\_evidence ) usage = CHECK\_REQUIRED\_USAGE\_COVERAGE( accounting\_evidence ) accounting = CHECK\_REQUIRED\_ACCOUNTING\_FINALITY( accounting\_evidence ) RETURN EVALUATE\_OBJECTIVE\_SPECIFIC\_CONJUNCTION( closure\_objective, logical, resources, usage, accounting ) Das Expires 3 May 2027 [Page 104] Internet-Draft Telecom Session Operational Consistency October 2026 5.133. 7.C.12.10. Common Workflow Orchestration FUNCTION PROCESS\_SESSION\_LIFECYCLE\_CHANGE( session\_reference, incoming\_event, repositories, transition\_rules ): context = ESTABLISH\_SESSION\_CONTEXT( session\_reference, repositories ) event = QUALIFY\_LIFECYCLE\_EVENT( incoming\_event, context, repositories.source\_registry ) IF event == INCOMPATIBLE: RETURN RECORD\_NONAPPLICABLE\_EVENT() IF event == UNRESOLVED: RETURN RECORD\_UNRESOLVED\_CONTEXT() candidates = GENERATE\_LIFECYCLE\_TRANSITIONS( context, event, transition\_rules ) evaluated = [] FOR EACH candidate IN candidates: verdict = EVALUATE\_LIFECYCLE\_TRANSITION( candidate, context, CURRENT\_RESOURCE\_EVIDENCE(), CURRENT\_OPERATOR\_EVIDENCE() ) ADD { candidate, verdict } TO evaluated selected = SELECT\_SUPPORTED\_TECHNICAL\_TRANSITION( evaluated ) operation\_status = RECONCILE\_ANY\_SEPARATELY\_PERFORMED\_OPERATIONS( selected ) Das Expires 3 May 2027 [Page 105] Internet-Draft Telecom Session Operational Consistency October 2026 usage\_status = RECONCILE\_SESSION\_ACCOUNTING( context, CURRENT\_USAGE\_RECORDS(), APPLICABLE\_ACCOUNTING\_CONTRACT() ) operator\_status = RECONCILE\_OPERATOR\_SESSION\_STATE( context, CURRENT\_OPERATOR\_EVIDENCE() ) result = BUILD\_VERSIONED\_LIFECYCLE\_RESULT( context, event, evaluated, operation\_status, usage\_status, operator\_status ) STORE\_SESSION\_LIFECYCLE\_REVISION(result) RETURN result The orchestration function is a technical reconstruction and transition-evaluation algorithm. It is not itself a universal authorization or network-effectuation facility. 5.134. 7.C.13. Worked Technical Examples 5.135. 7.C.13.1. Example 1 - Active Session with a Changed Subscription Condition A subscriber has an active network session. A supported subscriber information source reports that one service condition has changed. The processor identifies the affected subscriber, session, service, and source revision. It determines whether the condition applies to the ongoing session. An unaffected service can remain unchanged under the selected model. A service requiring modification is associated with the appropriate existing network procedure. The processor distinguishes the reported subscription change from the later observed resource effect. Das Expires 3 May 2027 [Page 106] Internet-Draft Telecom Session Operational Consistency October 2026 5.136. 7.C.13.2. Example 2 - SIM-Related Event Does Not Prove Session Termination A device-associated source reports a SIM-swap event. An existing data session remains present in the serving network's state. The processor determines the event's subscriber and service correspondence. It does not infer automatic session termination from the label alone. Where a governing condition requires a network lifecycle transition, the system identifies the affected session and later reconciles the actual resource state. 5.137. 7.C.13.3. Example 3 - Roaming with Home and Visited Operator State A device moves into a visited network. The home operator maintains one logical service representation. The visited operator exposes a serving-resource reference. The two operators use different local identifiers. The processor evaluates the boundary correspondence under the actual roaming architecture. It does not equate a change in the visited resource identifier with mandatory termination of the home-side logical session. 5.138. 7.C.13.4. Example 4 - QoS Modification Accepted but Not Observed An application requests a higher QoS profile. The relevant programmable interface accepts the request. The network-resource state still reflects the previous profile. The system records: | x | API request accepted; | |---|---| | x | intended profile updated; | | x | network application not yet established. | Das Expires 3 May 2027 [Page 107] Internet-Draft Telecom Session Operational Consistency October 2026 It does not report the new performance profile as applied solely from the API response. 5.139. 7.C.13.5. Example 5 - Two Concurrent Session Extensions Two application processes submit extension requests for the same programmable service session. The requests have different client references. The receiver may process them under its own idempotency and revision semantics. The processor identifies whether the second request extends the already modified expiry time, repeats the first request, or conflicts with the current session state. It does not assume both requested extensions must be summed. 5.140. 7.C.13.6. Example 6 - Reservation and Consumption A service has an illustrative budget of 100 usage units. An application reserves 40 units. Actual accounted usage becomes 25 units. Under a defined accounting model in which the reservation is adjusted as usage occurs, the outstanding reservation may be reduced appropriately. The processor does not add 40 reserved units and 25 consumed units as independent consumption unless the specified model requires that representation. 5.141. 7.C.13.7. Example 7 - Duplicate Cumulative Usage Reports A user-plane source reports cumulative usage of 500 MB. The same report is retransmitted. A later compatible cumulative report states 620 MB. Under a supported same-counter-generation model, the incremental usage between the distinct positions is: [ 620-500=120\\ \\mathrm{MB}. ] Das Expires 3 May 2027 [Page 108] Internet-Draft Telecom Session Operational Consistency October 2026 The duplicated 500 MB record is not counted as another 500 MB of usage. The example assumes compatible resource, counter, and time semantics. 5.142. 7.C.13.8. Example 8 - Consent Withdrawal with Scope-Specific Effects A subscriber withdraws consent for one identified data-processing purpose. The operator also maintains unrelated connectivity services. The processor determines which active session functions depend upon the changed consent condition. It does not automatically classify every active network resource as requiring release. The actual affected operations remain governed by their separate policy and authorization mechanisms. 5.143. 7.C.13.9. Example 9 - User-Plane Release with Accounting Pending A service session is terminated. The relevant user-plane resource release is established. A final usage report has not arrived. The lifecycle result may state: logical\_session = TERMINATED user\_plane\_resource = RELEASED usage\_reporting = FINAL\_REPORT\_PENDING accounting = UNRESOLVED resource\_cleanup = COMPLETE The processor need not pretend the network resource remains active simply because accounting is outstanding. 5.144. 7.C.13.10. Example 10 - Remote Operator Failure During Release A home operator initiates a session closure procedure. Its local state changes to released. The visited operator is unreachable. Das Expires 3 May 2027 [Page 109] Internet-Draft Telecom Session Operational Consistency October 2026 The processor records the home-side result and the unknown remote cleanup state. It does not infer remote release from the home-side acknowledgement. 5.145. 7.C.13.11. Example 11 - Resource Change Without New Logical Session A user-plane function is replaced as part of a supported continuity procedure. The logical session reference remains applicable. The processor associates the new resource generation with the continuing logical session. It avoids treating resource replacement alone as a second independent charging session. 5.146. 7.C.13.12. Example 12 - Charging Report Arrives after Closure A session ends at 12:00. A valid usage report arrives at 12:03 describing traffic measured between 11:55 and 12:00. The processor uses the measurement interval and accounting correspondence. It does not assume that the session remained operational until 12:03 merely because the report was received then. 5.147. 7.C.13.13. Example 13 - Source Counter Reset A usage counter reads 900 MB. The network function restarts. The next counter report reads 30 MB. The processor does not calculate negative 870 MB as actual usage. It evaluates the source generation and reset semantics before reconstructing consumption. Das Expires 3 May 2027 [Page 110] Internet-Draft Telecom Session Operational Consistency October 2026 5.148. 7.C.13.14. Example 14 - Two Operator Revision Numbers The home operator reports local version 105. The visited operator reports local version 220. These values belong to different version namespaces. The processor does not conclude that the visited operator holds a later globally ordered state merely because 220 is greater than 105. It uses cross-operator event or state correspondence. 5.149. 7.C.13.15. Example 15 - Failed API Deletion with Resource Still Allocated A programmable session-delete request is transmitted. The response is lost. A later status query shows that the session-facing API record is absent. However, a relevant network-resource observation still shows an allocation. The processor reports the two separately established conditions. It does not assume that deleting the API-facing session record necessarily completed every underlying resource cleanup operation. 5.150. 7.C.13.16. Example 16 - Partial Operator Failure and Deferred Settlement An operator loses connectivity to a remote charging or settlement function. Local resource release is established. The final usage records are preserved for later reconciliation under the applicable source contract. The lifecycle result distinguishes operational closure from outstanding settlement. The processor does not fabricate a final settlement acknowledgement. Das Expires 3 May 2027 [Page 111] Internet-Draft Telecom Session Operational Consistency October 2026 5.151. 7.C.14. Common Workflow Implementation Alternatives The common technical relationship may be implemented through different architectures. The following alternatives provide practical support for Group C and may be further specialized in Embodiments 1.C-6.C. 5.152. C-DA-01 - Centralized Session-Lifecycle Reconciliation A shared processor obtains relevant subscriber, operator, resource, and accounting information. It reconstructs lifecycle state under a defined model. Its completeness remains dependent upon the information sources actually available. 5.153. C-DA-02 - Distributed Operator-Local Reconciliation Each participating operator maintains local lifecycle state and exchanges supported boundary information. An external component may reconcile abstract relationships without requiring complete internal topology disclosure. 5.154. C-DA-03 - Event-Sourced Lifecycle State The system reconstructs session state from an identified baseline and applicable event history. Missing events and incompatible source generations are explicitly represented. 5.155. C-DA-04 - Snapshot-and-Delta Session Reconstruction A versioned session snapshot is supplemented by subsequent qualified changes. The processor evaluates snapshot completeness and any missing deltas. 5.156. C-DA-05 - Relational Session-State Representation Session and resource correspondences are maintained through conventional relational tables. A graph database is not mandatory. Das Expires 3 May 2027 [Page 112] Internet-Draft Telecom Session Operational Consistency October 2026 5.157. C-DA-06 - Graph-Based Resource and Operator Correspondence The system represents logical sessions, resources, subscribers, and operators as related nodes. The graph provides structural correspondence but does not independently prove the current operational state. 5.158. C-DA-07 - State-Machine-Based Lifecycle Evaluation A state machine describes permitted session transitions and their required conditions. The implementation retains independent dimensions where one flat state would be inadequate. 5.159. C-DA-08 - Constraint-Based Lifecycle Reconstruction A constraint solver evaluates which combinations of subscriber, operator, resource, and accounting state are compatible with the evidence. Solver unknown or timeout is not treated as physical infeasibility. 5.160. C-DA-09 - Conditional Native Session Modification Where the receiving interface supports appropriate conditional or versioned updates, those native capabilities may be used. The workflow does not invent the existing conditional-update mechanism. 5.161. C-DA-10 - Asynchronous Job-Based Lifecycle Processing A session change may be processed through a remote job. The processor distinguishes acceptance from applied network state. 5.162. C-DA-11 - State-Observation-Based Reconciliation The processor obtains actual resource-state evidence after an operation. The resulting value does not automatically prove which actor caused the change. Das Expires 3 May 2027 [Page 113] Internet-Draft Telecom Session Operational Consistency October 2026 5.163. C-DA-12 - Home-Routed Roaming Correspondence The processor evaluates the home and visited operator references under a home-routed service arrangement. It uses the actual supported session and resource relationships. 5.164. C-DA-13 - Local-Breakout Roaming Correspondence The processor evaluates the different relevant home and visited operator responsibilities under an applicable local-breakout arrangement. The mechanism is not assumed equivalent to home-routed operation. 5.165. C-DA-14 - Abstract Interoperator State Exchange Operators exchange only selected session and lifecycle properties. Unknown internal detail remains explicit. 5.166. C-DA-15 - Usage-Report Lineage Reconstruction The processor identifies original and derived usage records. It detects duplicates and applies the appropriate cumulative or incremental measurement semantics. 5.167. C-DA-16 - Event-Time-Based Accounting Reconciliation Usage records are associated with measurement intervals, separately from report arrival times. Delayed reports do not automatically extend session duration. 5.168. C-DA-17 - Reservation-Aware Usage Reconciliation The processor distinguishes reservations, consumption, release, and outstanding quantities under a defined accounting model. This is a reconciliation mechanism, not a newly invented quota- enforcement primitive. 5.169. C-DA-18 - Source-Scoped Revision Handling The processor maintains revision and generation scopes separately for subscriber, operator, resource, and charging sources. Das Expires 3 May 2027 [Page 114] Internet-Draft Telecom Session Operational Consistency October 2026 It does not impose an unsupported global order. 5.170. C-DA-19 - Partial-State Session Recovery The system represents several possible states when asynchronous operations have unresolved outcomes. It avoids choosing a single state without supporting evidence. 5.171. C-DA-20 - Deferred Accounting Settlement The processor permits operational resource release to be established while accounting remains pending. Final settlement is reported only when supported by the applicable records. 5.172. C-DA-21 - Hardware-Adjacent Resource Observation Device or network-function telemetry provides evidence about resource application or release. The observation is interpreted within its actual hardware and network context. 5.173. C-DA-22 - Privacy-Minimizing Operator Correspondence A domain may expose only the attributes necessary for the selected cross-operator lifecycle assessment. The resulting limited visibility is recorded. 5.174. C-DA-23 - Multi-Access Session Correspondence A logical session may be associated with several access contexts or resource paths under an applicable network architecture. The processor evaluates the actual access and session rules rather than assuming all accesses share one physical lifecycle. 5.175. C-DA-24 - Optional Advanced Timing and Hybrid Computation Suitable timing sources or optimization methods may assist with resolving session events or planning reconstruction. They do not eliminate source uncertainty or prove global ordering without adequate guarantees. Das Expires 3 May 2027 [Page 115] Internet-Draft Telecom Session Operational Consistency October 2026 5.176. 7.C.15. Representative Proposed Verification Tests The following 65 cases are proposed reference implementation tests and are not represented as having been executed. 5.177. Test 5.178. Scenario Expected technical result 5.179. ID C-T01 Establish one session with complete source Initial state reconstructed correspondence C-T02 Session identifier reused in another namespace Identity distinguished C-T03 Session resource replaced without logical Continuity evaluated termination C-T04 Subscriber profile changes during active Applicable condition revision session identified Unaffected session condition C-T05 Subscriber update does not affect one service preserved C-T06 SIM-related event arrives without session No automatic termination evidence C-T07 SIM-related event identifies affected Correct relationship evaluated subscriber context C-T08 Operator role changes during roaming Operator correspondence updated C-T09 Home and visited operator identifiers differ Namespace mapping preserved C-T10 Home-routed session changes serving network Applicable model evaluated C-T11 Local-breakout roaming arrangement Appropriate responsibility mapping C-T12 Remote operator exposes abstract state only Internal uncertainty retained C-T13 Home-side transition completes, remote side Partial cross-operator status unknown C-T14 Service modification request accepted C-T15 Service modification observed in resource state Not automatically applied Das Expires 3 May 2027 [Page 116] Internet-Draft Telecom Session Operational Consistency October 2026 Applied-state correspondence C-T16 API state changes but network resource does Discrepancy detected not C-T17 Network resource changes before API status Asynchronous dimensions update distinguished C-T18 Two concurrent session extensions Receiver semantics applied C-T19 Duplicate extension request under supported Correct logical interpretation idempotency C-T20 Same identifier reused with different parameters C-T21 Session release request times out C-T22 Release succeeds but reply lost C-T23 Local release complete, remote resource remains C-T24 Logical termination and accounting pending C-T25 Final usage report arrives after termination C-T26 Duplicate usage report C-T27 Cumulative usage reports 500 and 620 Conflict evaluated Remote outcome unresolved No false nonapplication Partial cleanup result Different terminal dimensions Measurement time respected No double counting Correct 120-unit difference under model C-T28 Incremental usage reports Correct aggregation C-T29 Counter resets on function restart Generation handled C-T30 Counter rollover supported by source Correct reconstruction semantics C-T31 Counter rollover semantics unknown Usage unresolved C-T32 Usage report refers to wrong resource instance Mapping rejected C-T33 Usage interval overlaps two session Attribution qualified generations Reservation and consumption C-T34 Reservation created but no usage reported separated C-T35 Consumption recorded while reservation Das Expires 3 May 2027 [Page 117] Internet-Draft Telecom Session Operational Consistency October 2026 Accounting model applied pending C-T36 Reservation expires with earlier measured No zero-consumption inference usage C-T37 Two services share one accounting budget C-T38 Budget and reservations have incompatible units Scoped reconciliation Semantics mismatch C-T39 Consent withdrawn for one purpose Scope-specific effect evaluation C-T40 Consent update unrelated to one session No universal service termination C-T41 Consent source event delayed C-T42 Operator revisions use independent namespaces C-T43 Event arrival order differs from effective order Source ordering respected C-T44 Source event duplicated after replay C-T45 Source generation changes C-T46 Session control function fails Effective context evaluated Deduplication Identity continuity checked Available state reconstructed C-T47 Replacement control function takes over C-T48 Existing user- plane resources survive controller change C-T49 User-plane resource released but local record stale No numeric global order Resource/session correspondence evaluated No false new session State discrepancy reported C-T50 Remote operator unreachable at termination Unknown remote cleanup C-T51 Source charging record missing Settlement unresolved C-T52 Charging records complete but resource still Das Expires 3 May 2027 [Page 118] Internet-Draft Telecom Session Operational Consistency October 2026 Separate closure dimensions allocated C-T53 Resource cleanup complete and charging Partial terminal status pending C-T54 All mandatory closure requirements Full closure under scope established C-T55 One mandatory closure condition Full closure not established demonstrably false C-T56 One mandatory closure condition unknown Unresolved closure C-T57 Session history reconstructed from complete Reference-equivalent result event log C-T58 Session event history contains gap Incomplete state retained C-T59 Snapshot and deltas reconstruct supported state Correct applicable revision C-T60 Snapshot is authentic but stale Applicability checked C-T61 Graph and relational implementations use Equivalent supported evaluation same constraints C-T62 Solver search budget exhausted C-T63 Change is technically applicable but unauthorized C-T64 Network operation succeeds but accounting record delayed C-T65 Final session result includes all relevant state dimensions Unresolved, not infeasible No automatic effectuation Technical/accounting distinction Reconstructible lifecycle output The reference test harness should retain the underlying simulated session state independently from the reconstruction engine. It should also distinguish deterministic correctness, source coverage, operator correspondence, usage reconciliation, and computational performance. No performance improvements or completed test outcomes are asserted by the proposed test list. Das Expires 3 May 2027 [Page 119] Internet-Draft Telecom Session Operational Consistency October 2026 5.180. 7.C.16. PHOSITA Reference Implementation 5.181. 7.C.16.1. Reference Environment A reference implementation may comprise: 1. A subscriber information simulator. 2. A session-management simulator. 3. A user-plane resource simulator. 4. A home-operator state service. 5. A visited-operator state service. 6. A programmable network-service API simulator. 7. A usage-report generator. 8. A charging-record repository. 9. A session-lifecycle event log. 10. A cross-domain resource mapping repository. 11. A lifecycle transition evaluator. 12. A resource-effect observer. 13. An accounting reconciler. 14. A session-closure evaluator. 15. A test and fault-injection harness. The components may execute as ordinary software processes. The simulation can distinguish native 3GPP session procedures from higher-level application-facing session abstractions. An implementation shall not treat a CAMARA API session as identical to a PDU Session unless an applicable deployment-specific correspondence has been established. 5.182. 7.C.16.2. Initial Reference Operation The test harness creates a logical session with: | x | a subscriber reference; | |---|---| | x | a home operator reference; | | x | a serving operator reference; | | x | an applicable service profile; | | x | one or more network resources; and | | x | an accounting reference. | It records the independent source states. 5.183. 7.C.16.3. State-Change Injection The simulator changes one governing condition while preserving the logical session identifier. The lifecycle processor determines the affected state dimensions. 5.184. 7.C.16.4. Delayed Resource Application The simulated network accepts a service modification but delays application. Das Expires 3 May 2027 [Page 120] Internet-Draft Telecom Session Operational Consistency October 2026 The processor must distinguish requested and observed states. 5.185. 7.C.16.5. Cross-Operator Change A roaming context changes. One operator observes the change before another. The processor reconciles the applicable operator representations without imposing unsupported global version ordering. 5.186. 7.C.16.6. Accounting Delay The simulator sends the final usage report after session-resource release. The processor must not classify the resource as active solely because accounting remains pending. 5.187. 7.C.16.7. Concurrent Requests Two API processes modify the same service-session context. The processor evaluates request identity, receiver semantics, and resulting state. 5.188. 7.C.16.8. Partial Failure One function becomes unreachable during the transition. The system retains supported local state and unresolved remote conditions. 5.189. 7.C.16.9. Closure The logical session terminates. The processor separately evaluates resource cleanup, usage coverage, and accounting finalization. 5.190. 7.C.16.10. Result Validation The harness compares the reconstructed lifecycle with independently controlled simulation ground truth. It records unsupported conclusions, missing evidence, version mismatches, and resource/accounting discrepancies. Das Expires 3 May 2027 [Page 121] Internet-Draft Telecom Session Operational Consistency October 2026 5.191. 7.C.17. Standards and Industrial Implementation References The common workflow may use established telecommunications architecture and protocol mechanisms as implementation foundations. 5.192. 7.C.17.1. 3GPP PDU Session Procedures 3GPP TS 23.502 defines procedures relevant to PDU Session establishment, modification, and release. It also describes session procedures associated with subscriber and mobility-related changes. This technical profile does not claim those established procedures as newly invented. Its processing arrangement evaluates technical correspondence among the relevant lifecycle states and their available evidence. 5.193. 7.C.17.2. PFCP Resource-State Information 3GPP TS 29.244 defines PFCP session establishment, modification, deletion, and reporting procedures. Depending upon the supported feature set, modification results may include partialacceptance semantics. Session deletion and reporting may also provide information relevant to usage and resource release. The group may use such information to distinguish control-plane intent from supported userplane state. PFCP session identity is not treated as globally identical to an application-facing servicesession identifier. 5.194. 7.C.17.3. Charging and Usage 3GPP TS 32.255 addresses data connectivity charging, including applicable charging data and interactions among network functions. The present group may use charging-session and usage references where technically relevant. It does not redefine standard charging procedures. Das Expires 3 May 2027 [Page 122] Internet-Draft Telecom Session Operational Consistency October 2026 5.195. 7.C.17.4. Programmable Network APIs CAMARA and GSMA Open Gateway define various programmable network APIs, including Quality on Demand and device-related information APIs. Some API services create, query, modify, extend, delete, or report the status of applicationfacing sessions. The group evaluates the correspondence between these representations and the actual supporting network resources. An application-facing QoS session is not automatically presumed to be identical to a 3GPP PDU Session. 5.196. 7.C.17.5. Roaming and Operator Interoperability A deployment may support home-routed or local-breakout service architectures, or other applicable interoperator arrangements. The processor uses the actual standardized and deployed responsibilities. It does not assert that every roaming implementation transfers the same authority or data structures. 5.197. 7.C.17.6. Other Session Technologies The workflow may be adapted to SIP dialogs, fixed-network subscriber sessions, enterprise connectivity services, network-slice services, or other programmable session systems. Such adaptation requires the actual session identity, state, resource, and accounting semantics of the selected environment. A SIP dialog, a PDU Session, and an application API service session are not automatically interchangeable concepts. 5.198. Embodiment 1.C - SIM-Related Trust-State Changes During Active Session Continuity Workflow Variation C-V1. The embodiment will address the correspondence between reported SIM or deviceassociation events, versioned subscriber context, active sessions, and the network-resource state relevant to session continuation. Das Expires 3 May 2027 [Page 123] Internet-Draft Telecom Session Operational Consistency October 2026 It will distinguish a change in subscriber-associated information from an established change in the state of an active network session. It will not repeat generic device authentication or execution authorization. Embodiment 2.C - Interoperator Roaming Transition and Session-State Responsibility Correspondence Workflow Variation C-V2. The embodiment will examine home and visited operator session contexts, local versus remote state, abstract cross-operator mappings, resource continuity, and incomplete handoff evidence. It will distinguish logical session continuity from operator or network-function replacement. 5.199. Embodiment 3.C - Concurrent Programmable Session Updates and Usage-Quota State Reconciliation Workflow Variation C-V3. The embodiment will address competing session modifications, extensions, reservations, and usage reports that affect shared or overlapping service state. It will focus on reconstructing resulting operational and accounting correspondence. It will not repeat previously disclosed generic shared-quota enforcement or API permission gating. 5.200. Embodiment 4.C - Service Effect, Network Usage, and Charging- Record Correspondence Workflow Variation C-V4. The embodiment will distinguish requested service behavior, observed resource effects, traffic usage intervals, charging records, and delayed or duplicated accounting information. It will provide source-qualified reconciliation between operational effect and accounting evidence. Das Expires 3 May 2027 [Page 124] Internet-Draft Telecom Session Operational Consistency October 2026 5.201. Embodiment 5.C - Purpose-Scoped Consent-State Changes During Active Telecommunications Service Workflow Variation C-V5. The embodiment will examine how a changed consent condition relates to a continuing session and its different service or data-processing functions. It will distinguish consent scope, effective event context, actual network effects, and any outstanding lifecycle operations. It will not reintroduce the prior purpose-authority or protected execution-finality invention. Embodiment 6.C - Partial Operator Failure, Session Release, and Deferred Settlement Reconstruction Workflow Variation C-V6. The embodiment will address a session whose logical, resource, operator, and accounting states become partially inconsistent following an interruption. It will distinguish local completion, remote unknown outcome, resource cleanup, usagereport completion, and settlement finality. It will provide implementation variations for reconstruction and continuity without assuming global atomic cross-operator transactions. 5.202. 7.C.19. Implementation and Interoperability Relationships The following are potential technical building blocks for engineering evaluation and interoperability analysis. They are not claims of established novelty. Relationship C-1 - Session identity continuity: Associating a logical session with changing resource and network-function instances under supported identity and generation information. Das Expires 3 May 2027 [Page 125] Internet-Draft Telecom Session Operational Consistency October 2026 5.203. Relationship C-2 - Governing-condition state correspondence: Determining which versioned subscriber or service conditions apply to a session at a particular lifecycle stage. Relationship C-3 - Operator transition reconstruction: Relating home and visited operator states without assuming common version namespaces or complete internal visibility. Relationship C-4 - Requested versus applied resource state: Distinguishing service- session modification from the actual network resources implementing that modification. Relationship C-5 - Concurrent session-operation reconciliation: Evaluating overlapping lifecycle requests against the applicable state and receiver contracts. Relationship C-6 - Usage and resource correspondence: Associating usage records with session intervals and resource instances while respecting record duplication and counter semantics. Relationship C-7 - Reservation versus consumption distinction: Reconstructing usage and reservation states under their defined accounting relationship. Relationship C-8 - Consent-state lifecycle relevance: Determining which active service functions are affected by a scoped governing-condition change. Relationship C-9 - Partial release: Distinguishing logical termination from incomplete resource cleanup and pending accounting. Relationship C-10 - Cross-domain unresolved-state preservation: Retaining unknown Das Expires 3 May 2027 [Page 126] Internet-Draft Telecom Session Operational Consistency October 2026 operator or resource conditions when a remote system is unreachable. Relationship C-11 - Historical revision reconstruction: Preserving source-qualified evidence needed to reconstruct the applicable session-state transition. Relationship C-12 - Multi-dimensional lifecycle closure: Evaluating the specific resource and accounting conditions required by a selected closure objective. The legal scope of any subsequent claims depends upon the actual detailed disclosure and applicable prior art. Established 3GPP, CAMARA, charging, roaming, and network-management functionality shall be considered when identifying any potentially inventive technical cooperation among these elements. 5.204. 7.C.20. Industrial Applicability The common workflow may be useful in the following telecommunications environments. Mobile network session management: Interpreting subscription, session, mobility, and resource-state changes during active connectivity. Interoperator roaming: Maintaining a technically qualified relationship between home and visited network states. Programmable quality-of-service services: Distinguishing API-facing service-session status from the supporting network-resource state. Mobile network exposure platforms: Reconciling resource and accounting consequences of permitted programmable service requests. Usage and charging systems: Interpreting delayed, duplicated, cumulative, and interval- Das Expires 3 May 2027 [Page 127] Internet-Draft Telecom Session Operational Consistency October 2026 based usage reports. Enterprise connectivity: Managing session continuity across private and public telecommunications infrastructure. Fixed-mobile convergence: Reconstructing sessions with changing access and subscriber- service context. Network-slice services: Evaluating service and resource-state correspondence for applicable slice-dependent connectivity. Hybrid satellite-terrestrial networks: Tracking logical service continuity where serving network infrastructure changes under substantial communication delay. Autonomous network operations: Supplying technical session-state evidence to existing service management, monitoring, and separately governed effectuation systems. These are non-limiting industrial applications. The disclosure does not assume endorsement or implementation by any named standards organization or commercial entity. 5.205. 7.C.21. Relationship to the Foundational Shared Technical Foundation This profile is a technical description of Group C operational consistency. Any independent authorization, protected execution decision, or post-effect verification is a separate requirement determined by the applicable interface and source evidence; this document alone grants no execution authority. That foundational disclosure includes extensive subject matter concerning autonomous processing, telecommunications, state-dependent governance, execution-finality enforcement, and related technical mechanisms. Das Expires 3 May 2027 [Page 128] Internet-Draft Telecom Session Operational Consistency October 2026 The present group does not describe established 3GPP session management, roaming, charging, CAMARA APIs, subscriber authentication, quota enforcement, or generic revocation checks as inventions newly created by this specification. The proposed additional focus concerns operational-state correspondence during the evolution of a session, including relationships among logical session identity, governing- condition revisions, operator context, network resources, usage evidence, and incomplete closure. The exact incremental features must be examined against the earlier as-filed materials and relevant public prior art. This text is an illustrative technical disclosure. Separate formal disclosures and external references follow their applicable processes. Any subsequent claims should be grounded in the particular processing relationships, source assumptions, and technical outcomes that the detailed specification enables. This technical profile is constrained by the source-defined operation, observation, identity, timing and state relationships. Other profiles are applicable only where their independently required interfaces and guarantees are established. 5.206. 7.C.22. Non-Limiting Implementation Character The present group may be implemented through software, firmware, network-control functions, operator management platforms, telecommunications databases, usage-report processors, programmable API services, resource observers, and combinations thereof. The system may be centralized, distributed, or federated. Its data may be represented through conventional records, graphs, event histories, relational databases, or constrained state models. No particular language, database, 3GPP network-function deployment, commercial API platform, or device manufacturer is essential to every variation. The logical session may correspond to one or several resource instances. Das Expires 3 May 2027 [Page 129] Internet-Draft Telecom Session Operational Consistency October 2026 The session may continue across a change in serving network or underlying resource. Its governing conditions may change without requiring termination. Network resource release and charging settlement may complete at different times. A remote operator may expose only partial state. An operation may have an unknown result. A usage report may arrive after session termination. A source record may be authentic while remaining incomplete or stale. The implementation must respect the resulting technical limitations. The common workflow does not impose universal global atomicity across operator and accounting systems. It does not assert exactly-once charging or effectuation without the corresponding mechanisms. It does not require a new cryptographic execution capability. Any consequential network operation remains governed by the separately applicable operational and authorization mechanisms. All algorithms, numerical examples, source representations, and implementation variations are non-limiting illustrations of the disclosed technical relationships. 5.207. 7.C.23. Common Workflow Conclusion The central technical subject of GROUP C is maintaining an evidence- qualified correspondence among the multiple changing states of an active or terminating telecommunications session. The disclosed common workflow identifies a logical session and its governing context, observes relevant subscriber, operator, service, or resource changes, evaluates the technical applicability of lifecycle transitions, reconciles actual network effects, associates usage and accounting evidence, and determines whether continuation or closure conditions are established. It specifically distinguishes: Das Expires 3 May 2027 [Page 130] Internet-Draft Telecom Session Operational Consistency October 2026 1. Logical session identity from resource-instance identity. 2. Subscriber state from session state. 3. Operator context from logical session continuity. 4. Requested service changes from applied resource effects. 5. Reservation from consumption. 6. Measurement occurrence from report arrival. 7. Local operator completion from remote completion. 8. Session termination from resource cleanup. 9. Resource cleanup from accounting settlement. 10. Technical lifecycle compatibility from authorization to act. Where the required evidence supports a lifecycle state, the processor may report that state under its specified scope. Where an applicable condition is demonstrably violated, the corresponding transition is classified incompatible. Where necessary source or remote state remains unavailable, the processor preserves an unresolved result. 5.208. Common Workflow C-CW-01 therefore provides the technical foundation for 5.209. Embodiments 1.C through 6.C, without repeating the radio- observation, multiagent incident-remediation, or protected execution-finality inventions addressed elsewhere in the portfolio. 5.210. EMBODIMENT 1.C - SIM-RELATED TRUST-STATE TRANSITIONS, ACTIVE TELECOMMUNICATIONS SESSION CORRESPONDENCE, AND EVIDENCE- 5.211. QUALIFIED CONTINUITY RECONSTRUCTION 5.212. 1.C.1. Embodiment Identification Invention Group: C - Programmable Telecommunications Session Lifecycle and Cross- Operator Operational-State Consistency. Embodiment Number: 1.C - First Embodiment of GROUP C. Technical Title: Systems and Methods for Reconstructing Active Telecommunications Session Continuity Following SIM Association Changes, eSIM Profile Transitions, and Versioned Subscriber-State Updates. Common Workflow: C-CW-01. Das Expires 3 May 2027 [Page 131] Internet-Draft Telecom Session Operational Consistency October 2026 Principal Workflow Variation: C-V1 - SIM-Related Trust-State Changes During Active Session Continuity. Embodiment Algorithm: C-ALG-02. Specific Alternative Implementations: C-1-DA-01 through C-1-DA-36. Common Workflow Relationships: C-CW-01.01-C-CW-01.28 and C-CW- 01.32-C-CW- 01.38, with particular emphasis on subscriber-state correspondence, session-instance continuity, resource-state verification, and incomplete transition reconstruction. 5.213. Related Embodiments: x x x x x 2.C - Interoperator roaming and session-state responsibility correspondence. 3.C - Concurrent programmable session updates and usage-quota reconciliation. 4.C - Service effect, network usage, and charging-record correspondence. 5.C - Purpose-scoped consent-state changes during active telecommunications service. 6.C - Partial operator failure, session release, and deferred settlement reconstruction. 1.C.1.1. General Technical Subject The present embodiment describes a telecommunications session- continuity processing system configured to evaluate the effects of SIM-related and subscriber-association changes upon one or more previously established communication or connectivity sessions. The system receives or retrieves an event concerning a mobile subscription, subscriber identity association, SIM replacement, remotely provisioned SIM profile, device association, or another supported subscriber-related state change. It determines the actual meaning of the event under the originating source's information model. It then identifies which active or historical session instances may be associated with the affected subscriber or service context. Das Expires 3 May 2027 [Page 132] Internet-Draft Telecom Session Operational Consistency October 2026 For each candidate session, the system reconstructs the relevant subscriber-state version, network-function context, resource assignments, outstanding lifecycle operations, and observed session status. The processor evaluates whether the event: (a) has an established technical relationship to the session; (b) changes a governing condition relevant to that session; (c) corresponds to a session modification, release, replacement, or continuation procedure; (d) is merely a risk signal without established session-level effect; (e) describes a device or profile transition whose impact depends upon the applicable deployment; or (f) cannot presently be associated with a specific session lifecycle. The resulting reconstruction distinguishes the occurrence of the SIM- related event from any independently observed change in network- session state. A SIM swap may occur without the external evidence source reporting which data sessions were affected. An eSIM profile may be enabled without a complete public view of the network registration and session state. A new serving context may coexist temporarily with an older session context whose release is not yet established. The disclosed system does not treat any of these possibilities as automatically equivalent. It maintains evidence-qualified correspondence among the event, affected subscription, logical session, supporting resources, and observed lifecycle effects. 1.C.1.2. Principal Technical Distinction The central mechanism is event-to-session applicability reconstruction followed by network-effect correspondence. Das Expires 3 May 2027 [Page 133] Internet-Draft Telecom Session Operational Consistency October 2026 It separates three technical questions. 5.214. Question A - What changed? The processor determines what the source establishes: for example, a mobile-line association change, profile enablement, subscription-data revision, or device-associated observation. 5.215. Question B - Which sessions are affected? The processor associates that change with the relevant subscriber and service contexts and identifies the active or historical session instances for which the event is technically applicable. 5.216. Question C - What actually happened to those sessions? The processor obtains appropriate control-plane, user-plane, resource, or service observations and determines which lifecycle effects are established. A positive answer to Question A does not automatically provide positive answers to Questions B and C. 1.C.1.3. Distinction from Generic SIM-Swap Fraud Detection Existing SIM-swap information services can provide risk-relevant information to applications. The present embodiment does not claim the general concept of checking whether a SIM changed. It does not claim that detecting a SIM change itself proves account compromise. Nor does it claim a conventional subscriber authentication or fraud- scoring system as a new technical mechanism. Its particular subject is the stateful association of such events with existing session instances and the reconciliation of actual session-continuity outcomes across changing subscriber and network contexts. A fraud-assessment system may consume the reconstructed state. The network-session reconstruction remains technically distinct from that assessment. Das Expires 3 May 2027 [Page 134] Internet-Draft Telecom Session Operational Consistency October 2026 1.C.1.4. Separation from Existing Execution-Finality Mechanisms The present embodiment does not redefine prior protected authority, capability, revocation, or Finality Sink mechanisms. It may determine that an active session has a changed applicable subscriber context. It may identify that a particular service requires modification under an established operator procedure. Such a determination is not itself a newly created execution authorization. Actual network modification or release remains governed by the relevant established network procedures and independently applicable operational controls. 5.217. 1.C.2. Particular Technical Problem Space 5.218. 1.C.2.1. A Mobile Number Is Not a Universal Session Identifier A mobile phone number may be used by an external application to request SIM-change information. However, a 5G network session is associated with its actual subscriber and sessionmanagement context. The mobile number, internal subscriber identifier, SIM profile identifier, and PDU Session identifier are not interchangeable. A processor that joins sessions using only a phone number can incorrectly associate different subscribers or subscription generations. The system therefore uses a supported mapping from the event's subject to the relevant internal subscriber and session identities. 5.219. 1.C.2.2. A SIM-Swap API Response May Not Expose the Underlying Subscription Identity An external SIM-swap API may indicate whether a change occurred within a requested period. It need not expose the actual IMSI, SUPI, ICCID, eUICC identifier, or network session identifier. Das Expires 3 May 2027 [Page 135] Internet-Draft Telecom Session Operational Consistency October 2026 The receiving application cannot infer that hidden information merely from a positive boolean result. A deployment may use an operator-controlled internal resolver where such resolution is permitted and technically supported. Otherwise, session-level applicability remains unresolved. 5.220. 1.C.2.3. A Positive SIM-Change Signal Is Not Automatically Evidence of Fraud A SIM replacement may be legitimate. A mobile user may replace a damaged SIM, change devices, activate a supported additional SIM, or otherwise change the subscriber association. The processor describes the technical event. Any fraud-risk classification must be separately grounded in appropriate evidence and policy. The present embodiment does not equate a SIM change with malicious behavior. 5.221. 1.C.2.4. A Negative SIM-Change Response May Have Limited Historical Scope An API may report no change within a specified lookback period. This does not establish that no SIM change occurred at any earlier time. Likewise, a null latest-change date may reflect limits in history retention or disclosure. The system retains the source's monitoring horizon. A negative result within a limited interval is not converted into a universal statement about the subscription's entire history. 5.222. 1.C.2.5. An External Event May Arrive After Its Effective Time A subscriber association may change before an application receives the corresponding notification. The session may already have modified its state. Das Expires 3 May 2027 [Page 136] Internet-Draft Telecom Session Operational Consistency October 2026 A processor that treats notification arrival as the event's effective time may incorrectly interpret sessions and network resources. The system distinguishes source occurrence or effective time from notification delivery time. 5.223. 1.C.2.6. The Meaning of a SIM Event Depends on Its Source A SIM-change risk API, an operator subscription database, an eSIM profile manager, a device telemetry source, and a network- registration function may report different aspects of a subscription. A profile-enable operation is not necessarily equivalent to a mobile- number-to-SIM reassociation. An operator subscription-data update is not necessarily equivalent to a physical SIM replacement. A device change is not necessarily a SIM swap. The system identifies the technical event type before evaluating session effects. 5.224. 1.C.2.7. Different Subscriber Identifiers Have Different Scopes A system may encounter a SUPI, legacy IMSI, subscription-related phone number, ICCID, EID, device identifier, and application account identifier. These represent different technical concepts. The system does not assume that a shared string format or administrative association makes them identical. It uses source-scoped, time-applicable identity relationships. Where an event cannot be linked to a network subscription through an adequate mapping, the system preserves that limitation. 5.225. 1.C.2.8. One Subscriber May Have Several Active Sessions A subscriber may have several PDU Sessions associated with different DNNs, slices, access contexts, or service requirements. A subscriber-state change may affect only some of them. The processor must evaluate applicable scope rather than assume that every session under the subscriber is affected identically. Das Expires 3 May 2027 [Page 137] Internet-Draft Telecom Session Operational Consistency October 2026 5.226. 1.C.2.9. One Device May Have Several Active Subscription Profiles A device may support multiple physical SIMs, eSIM profiles, or simultaneously enabled profiles under an applicable hardware and software architecture. A transition involving one profile does not automatically establish an equivalent transition for the other profiles. The processor identifies the affected subscription and its relevant session instances. It does not treat the device itself as the sole session identity. 5.227. 1.C.2.10. An eSIM Profile Can Be Installed Without Being Enabled Remote provisioning may permit a profile to be downloaded and installed separately from enabling it for network use. Installation alone does not establish that the profile has become active in the mobile network. The processor distinguishes profile installation, enablement, disablement, deletion, and registration outcomes. 5.228. 1.C.2.11. A Profile Disable Event Does Not Prove Every Session Was Released A device-side profile operation may affect the ability to use a subscription. However, the release of a particular network-session context may depend on the actual access and core-network procedures. A network function may retain stale or temporarily unresolved state. The processor therefore obtains session-management and user-plane evidence where the release result is material. 1.C.2.12. A New Subscription Context May Coexist with an Older Unresolved Session A newly associated subscription may establish a network session while a previous session context has not yet been conclusively released. Das Expires 3 May 2027 [Page 138] Internet-Draft Telecom Session Operational Consistency October 2026 Such overlap does not automatically prove simultaneous legitimate use or malicious use. It may result from delayed cleanup, stale control-plane records, reporting lag, or another supported condition. The system reconstructs both contexts separately. 5.229. 1.C.2.13. Source-Reported Subscriber Association May Be Corrected A subscription system may amend an earlier association record. A previous event may be superseded or corrected. The processor maintains event identity and revision semantics so that an earlier session interpretation can be reevaluated. It does not treat a corrected event as an independent new SIM swap without source support. 5.230. 1.C.2.14. Subscriber-Data Notifications May Precede Session Modifications An operator's subscription-data function may notify a session- management function about updated information. The receiving function may subsequently apply an appropriate existing session modification or release procedure. The notification and the procedure outcome are distinct lifecycle events. The present embodiment evaluates their correspondence without claiming the standardized notification or procedure as newly invented. 5.231. 1.C.2.15. Network Function Replacement Can Obscure the Session Outcome A session-management function may restart or be replaced during the event. An old function instance may have recorded the subscriber update. A successor may hold a reconstructed session context. Das Expires 3 May 2027 [Page 139] Internet-Draft Telecom Session Operational Consistency October 2026 A processor must distinguish function-instance identity from logical session identity. It must not assume that a new function instance necessarily means that a new session was established. 5.232. 1.C.2.16. Local State May Not Prove User-Plane Effect A control-plane repository may report session release. A user-plane resource may still be present or its state may not be observable. The processor distinguishes logical release, control-plane result, user-plane rule state, and service reachability. 5.233. 1.C.2.17. An Update May Affect Only Selected Service Conditions A subscriber profile change may affect one DNN, network slice, service entitlement, or other scoped condition. An unaffected session may remain valid under the applicable operating model. A processor that applies a subscriber-wide interpretation to every session may cause unnecessary service disruption. The present embodiment requires scope-specific correspondence. 5.234. 1.C.2.18. Emergency and Special Services May Have Distinct Procedures Certain emergency or special-service session behaviors may differ from ordinary commercial data sessions. An implementation must apply the relevant network standards and legal requirements. It shall not assume that one generic subscriber-risk signal automatically requires termination of all such sessions. 1.C.2.19. A Network-Session Change Does Not Necessarily Mean a New Billable Session A user-plane function or service resource may change while the same logical session continues. Das Expires 3 May 2027 [Page 140] Internet-Draft Telecom Session Operational Consistency October 2026 The processor identifies the applicable charging and session relationship. It avoids treating resource replacement alone as proof of a second independent billable session. The detailed accounting reconciliation belongs primarily to Embodiment 4.C. 5.235. 1.C.2.20. A SIM-Swap Risk Signal May Become Stale An application may check whether a SIM changed within a specified lookback period. The check reflects the source's result at the query time under its monitoring contract. It may not establish the status at a much later action or session transition. The processor records the query context and does not silently extend the result beyond its supported applicability. 5.236. 1.C.2.21. A Device Change May Occur Without a SIM Change The same subscription may be used in a different physical device. A device-information service may report that change. The event may have relevance to network continuity or application risk assessment. However, a device change should not automatically be represented as a SIM replacement. The processor retains the event's actual semantics. 5.237. 1.C.2.22. Number Portability and Number Reassignment Require Distinct Interpretation A phone number may be ported between operators while remaining associated with the same subscriber under the applicable process. A number may also be reassigned to a different subscriber at a later time. Those situations have different identity and continuity consequences. Das Expires 3 May 2027 [Page 141] Internet-Draft Telecom Session Operational Consistency October 2026 An application relying only on the phone number may incorrectly associate sessions from separate subscriber generations. The system therefore evaluates the operator and subscriber-mapping history. 5.238. 1.C.2.23. A SIM Change Can Affect an Application's Trust Assessment Without Proving Network Session Failure A payment or account application may evaluate a SIM-swap signal as one factor in its risk policy. That does not establish that the underlying PDU Session failed or was released. The present embodiment permits a risk-related observation and a network-continuity observation to coexist without forcing them into one state. 5.239. 1.C.2.24. Out-of-Order Events Can Produce False State Regressions A notification describing an older subscriber state may arrive after a newer source revision. If the processor blindly applies arrival order, it may overwrite the current mapping with obsolete information. The system applies the source's supported revision and event-order semantics. It does not impose a global numerical order across unrelated sources. 5.240. 1.C.2.25. Replayed Events Can Cause Duplicate Transitions A subscriber-state event may be delivered more than once. Without appropriate event identity, a processor may interpret the replay as repeated changes. The system identifies source-qualified duplicate events and correction records. It does not assume all repeated textual descriptions are the same event without sufficient evidence. Das Expires 3 May 2027 [Page 142] Internet-Draft Telecom Session Operational Consistency October 2026 5.241. 1.C.2.26. A Partial Session Release Must Be Represented Explicitly A subscriber-related transition may lead to one established resource release while another relevant resource remains active or unresolved. The system must distinguish partial and complete results. It does not infer global completion from one successful operation acknowledgement. 5.242. 1.C.2.27. Data Privacy Limits Available Identity Correspondence Raw subscriber identifiers may be sensitive and subject to operator and jurisdictional restrictions. A system may be unable or unauthorized to access the complete mapping between a phone number, subscription, device, and session. The processor should use the minimum necessary information and preserve the resulting analytical limitation. A hash of an identifier does not automatically make the data anonymous or permit unrestricted correlation. 5.243. 1.C.2.28. Accurate Reconstruction Does Not Establish Execution Authority Even if the processor establishes that a session is associated with a newly applicable subscriber profile, it does not independently gain authority to modify or release that session. Network operations continue to use the applicable standards-based and separately governed execution controls. 5.244. 1.C.3. Specific Technical Contribution Sought The present embodiment provides a session-specific reconciliation procedure configured to: (a) receive a SIM-related or subscriber-association event; (b) classify the event according to the actual source semantics; (c) establish the event's scope, source generation, revision, effective interval, and monitoring limitations; (d) identify the mobile-line or subscriber context to which it applies; (e) obtain a technically supported mapping to relevant network subscriber identities where permitted; Das Expires 3 May 2027 [Page 143] Internet-Draft Telecom Session Operational Consistency October 2026 (f) enumerate candidate active or historical sessions; (g) evaluate each session's applicability independently; (h) distinguish concurrent sessions, additional subscriptions, and separate device profiles; (i) identify outstanding control-plane and resource operations; (j) evaluate whether a governing condition changed for each session; (k) identify which existing session-transition procedures may be applicable; (l) separately observe network-operation acknowledgement and applied resource state; (m) determine which sessions are established as continuing, modified, released, replaced, or unresolved; (n) preserve the distinction between an external risk signal and a network-session effect; (o) reconcile delayed and out-of-order event reports; (p) identify older session contexts whose cleanup remains uncertain; (q) preserve session and resource-generation continuity across function replacement; (r) identify the evidence needed to distinguish competing session- state reconstructions; (s) revise affected assessments when corrected subscriber or resource information arrives; and (t) provide a reproducible session-continuity result. The arrangement is not limited to a single SIM technology or one mobile network generation. It may use the relevant 3GPP, GSMA, operator, and device-specific interfaces according to their actual contracts. This technical profile is constrained by the source-defined operation, observation, identity, timing and state relationships. Other profiles are applicable only where their independently required interfaces and guarantees are established. Das Expires 3 May 2027 [Page 144] Internet-Draft Telecom Session Operational Consistency October 2026 5.245. 1.C.4. Representative Technical Architecture 5.246. 1.C.4.1. SIM-Related Event Intake Receives events or responses from available subscription, SIM-swap, eSIM-profile, device, or subscriber-state sources. It maintains the source-specific event meaning. A boolean indicating a recent SIM swap is not transformed into an invented network-session identifier. 5.247. 1.C.4.2. Event-Semantic Classifier Classifies the received information into its supported technical category. Illustrative categories include: | x | mobile-line SIM association change; | |---|---| | x | recent SIM-swap risk information; | | x | subscriber-data revision; | | x | eSIM profile installation; | | x | eSIM profile enablement; | | x | eSIM profile disablement; | | x | eSIM profile deletion; | | x | device-association change; | | x | subscriber-number portability; | | x | number reassignment; | | x | operator correction or withdrawal of an earlier event; and | | x | unknown or insufficiently specified subscriber-related change. | The classification is based upon actual source semantics rather than keyword matching alone. 5.248. 1.C.4.3. Identity Correspondence Resolver Determines supported mappings among the event's subject and the relevant internal subscriber, subscription, and session references. It records the direction, scope, validity, and provenance of each mapping. The resolver need not expose raw internal identifiers to an external application. 5.249. 1.C.4.4. Session Inventory Resolver Enumerates session instances potentially affected by the subscriber- related event. Das Expires 3 May 2027 [Page 145] Internet-Draft Telecom Session Operational Consistency October 2026 It may obtain the session information from an applicable session- management context repository. The result distinguishes active, historical, pending, and uncertain session contexts. 5.250. 1.C.4.5. Subscriber-State Revision Repository Maintains relevant subscriber and service-condition versions. It records the source and applicability of each revision. A revision may affect one service rather than all sessions belonging to the subscriber. 5.251. 1.C.4.6. eSIM Profile State Adapter Where applicable, obtains supported information about profile installation, enablement, disablement, deletion, or another remote- provisioning event. It does not infer network registration or PDU Session continuity merely from the profilemanagement response. 5.252. 1.C.4.7. Multi-Subscription Context Evaluator Determines which subscription or profile is relevant when a device has more than one subscription context. It distinguishes device identity from subscription and session identity. 5.253. 1.C.4.8. Session Applicability Evaluator Tests whether the event's subject, effective interval, service scope, and governing-condition semantics correspond to each candidate session. It produces a separate result per session. 5.254. 1.C.4.9. Session Transition Model Represents possible existing lifecycle procedures such as continuation, modification, release, reestablishment, or resource reassignment. The applicable procedure follows the actual network architecture and operator policies. Das Expires 3 May 2027 [Page 146] Internet-Draft Telecom Session Operational Consistency October 2026 5.255. 1.C.4.10. Control-Plane Status Observer Obtains supported information concerning relevant session-management state. It distinguishes notification receipt, processing acknowledgement, and established session transition. 5.256. 1.C.4.11. User-Plane State Observer Obtains relevant resource-state information, where available. This may include session-specific forwarding rules, QoS resources, or other applicable userplane conditions. It does not assume complete access to all physical traffic. 5.257. 1.C.4.12. Outstanding Operation Reconciler Tracks session changes whose outcomes are delayed, incomplete, or unknown. It interprets receiving-interface semantics as described in Common Workflow C-CW-01. 5.258. 1.C.4.13. Session Continuity Evaluator Determines whether a particular session remains established as continuing under its applicable logical and resource conditions. It may report more than one state dimension. 5.259. 1.C.4.14. Session Release and Cleanup Observer Tracks the supported release state of affected logical sessions and their resources. It distinguishes release initiation from completed cleanup. 5.260. 1.C.4.15. Evidence Coverage Evaluator Determines whether the relevant subscriber and session sources adequately cover the event and transition. It distinguishes incomplete historical monitoring from affirmative absence. Das Expires 3 May 2027 [Page 147] Internet-Draft Telecom Session Operational Consistency October 2026 5.261. 1.C.4.16. Reconstruction Revision Manager Identifies which session assessments depend upon corrected or newly available evidence. It reevaluates the affected results while retaining their earlier contexts. 5.262. 1.C.4.17. Optional Risk-Assessment Interface Supplies technically qualified subscriber-association information to an independently governed risk assessment. It does not require the network-continuity processor to classify every SIM change as fraud. 5.263. 1.C.4.18. Optional Existing Effectuation Interface Where an operator or deployment uses protected execution-finality mechanisms, the technical session findings may serve as inputs. The existing system independently controls consequential operations. 5.264. 1.C.5. Necessary Embodiment-Specific Interpretations The Group C definitions and later Master Definitions remain applicable. Only the following local descriptions are necessary to interpret this embodiment. 5.265. 1.C.5.1. SIM-Related State Event A SIM-related state event is a source-qualified observation or update concerning a SIM, eSIM profile, mobile-line association, subscription, or device-associated subscriber context. The event's exact meaning depends upon its source. 5.266. 1.C.5.2. Event-to-Session Correspondence Event-to-session correspondence is the supported relationship between a subscriber-related event and a particular logical or network session under the relevant identity, service, and temporal conditions. Das Expires 3 May 2027 [Page 148] Internet-Draft Telecom Session Operational Consistency October 2026 5.267. 1.C.5.3. Subscriber-Association Revision A subscriber-association revision identifies a versioned or otherwise ordered change in the mapping among the relevant mobile-line, subscription, profile, and subscriber identities. It does not imply that every associated session has already changed. 5.268. 1.C.5.4. Session Impact Set The session impact set comprises the session instances for which the event is established as relevant or remains potentially relevant under the available correspondence information. The result may distinguish confirmed from unresolved membership. 5.269. 1.C.5.5. Continuity Evidence Continuity evidence is the available session, control-plane, user- plane, and service-state information relevant to establishing whether a particular logical session persisted through the event. 5.270. 1.C.5.6. Transition Boundary The transition boundary is the supported event, effective-state, or observation context separating the earlier governing condition from a later condition. It need not correspond to one globally synchronized instant. 5.271. 1.C.5.7. Residual Session Context A residual session context is an earlier session or resource representation whose continued presence or cleanup status remains relevant after a subscriber-association or profile transition. The presence of such a context does not automatically establish active traffic or improper use. 5.272. 1.C.6. Representative Data Structures 5.273. 1.C.6.1. SIM-Related Source Event SubscriberAssociationEvent: event\_id source\_identity source\_generation source\_event\_reference event\_type event\_subtype mobile\_line\_reference subscription\_reference\_if\_available Das Expires 3 May 2027 [Page 149] Internet-Draft Telecom Session Operational Consistency October 2026 profile\_reference\_if\_available device\_reference\_if\_available source\_revision effective\_time\_or\_interval reporting\_time monitoring\_window observation\_limitations previous\_association\_reference new\_association\_reference evidence\_reference privacy\_scope Fields unavailable to the receiving component remain absent or explicitly unresolved. No implementation is required to expose hidden internal subscriber identifiers merely to populate every field. 5.274. 1.C.6.2. Identity Correspondence Record SubscriberIdentityCorrespondence: correspondence\_id source\_namespace destination\_namespace source\_reference destination\_reference\_if\_permitted subscriber\_generation applicable\_interval mapping\_source mapping\_evidence mapping\_completeness privacy\_restrictions correspondence\_verdict A mapping may be maintained within the operator without exposing the destination identifier to an external application. 5.275. 1.C.6.3. Candidate Session Record AffectedSessionCandidate: logical\_session\_reference session\_namespace session\_generation subscriber\_context\_reference service\_scope dnn\_or\_equivalent\_service\_reference slice\_or\_service\_class\_reference access\_context serving\_operator\_context control\_function\_reference user\_plane\_resource\_references governing\_condition\_revision observed\_lifecycle\_state event\_applicability\_verdict unresolved\_identity\_relationships 5.276. 1.C.6.4. eSIM Profile Context ProfileContext: profile\_reference device\_or\_euicc\_reference\_if\_available subscription\_correspondence profile\_management\_generation installed\_state enabled\_state management\_operation\_reference relevant\_source\_evidence related\_network\_registration\_reference applicable\_session\_references unknown\_correspondence\_conditions Das Expires 3 May 2027 [Page 150] Internet-Draft Telecom Session Operational Consistency October 2026 A profile-management operation does not by itself establish a particular network-session state. 5.277. 1.C.6.5. Session Transition Candidate SessionTransitionCandidate: candidate\_id subscriber\_event\_reference session\_reference original\_governing\_state proposed\_governing\_state transition\_type mandatory\_preconditions resource\_dependencies operator\_dependencies expected\_control\_plane\_effect expected\_user\_plane\_effect expected\_service\_effect applicable\_procedure\_reference technical\_feasibility\_verdict 5.278. 1.C.6.6. Session Effect Observation SessionEffectObservation: observation\_id source\_id source\_generation logical\_session\_reference resource\_instance\_reference observed\_state\_type observed\_value state\_revision event\_or\_measurement\_interval receiver\_arrival\_context related\_operation\_reference evidence\_coverage source\_semantics 5.279. 1.C.6.7. Transition Outcome SessionTransitionOutcome: event\_reference logical\_session\_reference subscriber\_mapping\_verdict governing\_condition\_verdict operation\_submission\_status receiver\_acceptance\_status control\_plane\_state user\_plane\_state service\_continuity\_state residual\_resource\_state accounting\_relationship\_reference unresolved\_conditions outcome\_revision 5.280. 1.C.6.8. Session Impact Reconstruction SessionImpactReconstruction: reconstruction\_id event\_reference source\_monitoring\_limitations identity\_correspondence\_version candidate\_session\_ids established\_affected\_sessions established\_unaffected\_sessions potentially\_affected\_sessions transition\_candidates observed\_transition\_outcomes residual\_session\_contexts evidence\_requirements unresolved\_conditions reconstruction\_revision Das Expires 3 May 2027 [Page 151] Internet-Draft Telecom Session Operational Consistency October 2026 5.281. 1.C.7. Detailed Operational Procedure The following 40 stages elaborate the first Group C embodiment without repeating the full common workflow. 5.282. 1.C-01 - Receive the SIM-Related Event The processor obtains a SIM-related notification, API response, operator subscription revision, eSIM management event, or related supported record. It preserves the raw source reference and the event's declared type. Output: Candidate subscriber-state event. 5.283. 1.C-02 - Determine the Source and Event Contract The processor identifies which system produced the record and what the reported event means. It distinguishes operator subscription events from external SIM-swap information APIs and device-originated observations. Output: Source-semantic context. 5.284. 1.C-03 - Establish Event Identity The system obtains the event reference and source generation where available. It checks whether the record is a new event, replay, duplicate delivery, or correction under the source's contract. Output: Qualified event identity. 5.285. 1.C-04 - Determine the Event's Technical Category The event is classified according to the actual data model. For example, an eSIM profile enablement is not automatically reclassified as a mobilenumber reassignment. Output: Event classification. 5.286. 1.C-05 - Determine the Subject Identity Scope The processor identifies whether the event applies to a phone number, subscription, profile, device, network subscriber, or other subject. Das Expires 3 May 2027 [Page 152] Internet-Draft Telecom Session Operational Consistency October 2026 It records the source namespace. Output: Event subject context. 5.287. 1.C-06 - Determine Historical Monitoring Limits For an external risk-information API, the processor identifies the supported lookback period, date availability, or other source reporting limitations. A null or negative result is interpreted within those limits. Output: Monitoring-coverage assessment. 5.288. 1.C-07 - Establish Event Timing The processor distinguishes the event's supported effective time, reported time, and arrival time. Where the effective time is known only as an interval, that interval is preserved. Output: Event temporal context. 5.289. 1.C-08 - Obtain Supported Identity Mappings The processor retrieves permitted correspondence between the event subject and the relevant internal subscription or network subscriber. It does not invent unavailable mappings. Output: Qualified subscriber correspondence. 5.290. 1.C-09 - Check Identity Generation and Reassignment The system determines whether a mobile number or subscription reference may have been reassigned or reused. It identifies whether historical session associations belong to the relevant subscriber generation. Output: Identity-generation result. 5.291. 1.C-10 - Enumerate Candidate Sessions The system identifies active, pending, or historical sessions potentially related to the affected subscription. Das Expires 3 May 2027 [Page 153] Internet-Draft Telecom Session Operational Consistency October 2026 Multiple sessions may be present. Output: Candidate session inventory. 5.292. 1.C-11 - Distinguish Other Subscription Profiles Where the device supports several subscriptions or profiles, the processor identifies which profile context is implicated. It does not automatically include unrelated subscriptions on the same device. Output: Subscription-profile scope. 5.293. 1.C-12 - Associate Each Session with Its Governing State The processor identifies the applicable service, subscriber, and operator context of each session before the reported change. Output: Pre-event session-state references. 5.294. 1.C-13 - Determine Which Conditions Changed The processor identifies the specific subscriber or profile attributes affected by the event. A general risk signal may not identify a particular changed network entitlement. Output: Condition-change set. 5.295. 1.C-14 - Evaluate Session-Specific Applicability For each session, the system checks identity, service scope, effective-state interval, and relevant subscriber conditions. It classifies the event as applicable, inapplicable, or unresolved. Output: Session impact set. 5.296. 1.C-15 - Determine Outstanding Session Operations The processor identifies previously submitted session modifications, releases, or establishment procedures whose outcomes may overlap the event. Output: Outstanding operation context. Das Expires 3 May 2027 [Page 154] Internet-Draft Telecom Session Operational Consistency October 2026 5.297. 1.C-16 - Identify Applicable Existing Network Procedures The processor determines which standardized or operator-defined session procedures may be relevant. For example, an established subscriber-data update may lead to an SMF-initiated modification or release under the applicable 3GPP procedure. The standard procedure itself is not claimed as newly invented. Output: Procedure candidates. 5.298. 1.C-17 - Evaluate Logical Session Continuity The system determines whether the supported lifecycle model permits the existing logical session to continue. It distinguishes continuity of the logical session from continuity of any one serving function or user-plane resource. Output: Logical continuity assessment. 5.299. 1.C-18 - Evaluate Multi-Session Effects The processor checks whether the same event has different effects across the subscriber's session instances. It does not force one global transition when per-session conditions differ. Output: Per-session transition requirements. 5.300. 1.C-19 - Evaluate Multi-Profile Effects Where profile enablement, disablement, or replacement is involved, the processor checks the relevant device and subscription contexts. It does not infer network-session release from a profile-management notification alone. Output: Profile-to-session correspondence. 5.301. 1.C-20 - Evaluate Current Operator Context The processor determines which operator and network-function contexts are relevant to the session. Das Expires 3 May 2027 [Page 155] Internet-Draft Telecom Session Operational Consistency October 2026 Cross-operator matters may be further processed under Embodiment 2.C. Output: Operator-state context. 5.302. 1.C-21 - Evaluate Network Resource Preconditions The processor identifies the currently supported resource state and any conditions relevant to an applicable session modification, continuation, or release. Output: Resource-state assessment. 5.303. 1.C-22 - Construct Candidate Session Transitions The processor may construct candidates for: | x | no material network-session change; | |---|---| | x | continued operation under updated governing conditions; | | x | network-session modification; | | x | partial service restriction; | | x | logical session release; | | x | resource reassignment; | | x | new session establishment; or | | x | unresolved state pending additional observations. | Output: Candidate transitions. 5.304. 1.C-23 - Evaluate Each Candidate's Technical Applicability The system checks the candidate's required subscriber, session, operator, and resource conditions. It does not infer applicability from the SIM-change label alone. Output: Transition feasibility result. 5.305. 1.C-24 - Determine Whether New Network Effectuation Is Required The processor identifies which candidates require actual network operations and which concern only an informational or risk-assessment update. This distinction prevents an external information query from being treated as direct evidence of a required PDU Session release. Output: Effect requirement classification. Das Expires 3 May 2027 [Page 156] Internet-Draft Telecom Session Operational Consistency October 2026 5.306. 1.C-25 - Associate Consequential Operations with Existing Controls Where a transition requires network modification or release, the system provides a structured operation specification to the applicable established management and authorization path. It does not independently authorize the action. Output: Operation specification. 5.307. 1.C-26 - Observe Operation Submission The processor records any separately performed session-management operation and its target. A local submission record is not classified as remote application. Output: Submission status. 5.308. 1.C-27 - Interpret Receiver Acceptance The processor evaluates acknowledgement and processing information according to the receiver's contract. Output: Acceptance status. 5.309. 1.C-28 - Observe Control-Plane Session Effects The system obtains relevant session-management state observations. It determines whether the required logical session modification or release is established. Output: Control-plane transition evidence. 5.310. 1.C-29 - Observe User-Plane Resource Effects Where relevant, the processor obtains supported information about user-plane rules or resource assignments. It distinguishes control-plane state from user-plane application. Output: User-plane effect evidence. Das Expires 3 May 2027 [Page 157] Internet-Draft Telecom Session Operational Consistency October 2026 5.311. 1.C-30 - Observe Service Continuity The processor obtains any service-level observations required by the transition model. It does not assume service continuity merely from the continued presence of a session database record. Output: Service-state correspondence. 5.312. 1.C-31 - Reconcile Unknown Remote Outcomes Where operation acknowledgement or resource-state information is missing, the processor retains appropriate possible states. It may obtain additional evidence under supported status and observation mechanisms. Output: Qualified outcome reconstruction. 5.313. 1.C-32 - Identify Residual Earlier Session Contexts The system identifies older session and resource contexts whose release or continued presence remains relevant after the subscriber- state change. It distinguishes stale records from established active traffic where possible. Output: Residual session assessment. 5.314. 1.C-33 - Determine Whether Apparent Simultaneous Sessions Are Actually Distinct The processor compares subscriber and resource generations, service references, and observation intervals. It does not automatically classify the coexistence of two records as unauthorized duplicate access. Output: Concurrent-state interpretation. 5.315. 1.C-34 - Evaluate Any Required Accounting Correspondence Where relevant, the system associates the affected logical session and resource generations with their accounting references. The detailed charging procedure remains within Embodiment 4.C. Das Expires 3 May 2027 [Page 158] Internet-Draft Telecom Session Operational Consistency October 2026 Output: Accounting continuity reference. 5.316. 1.C-35 - Determine Final Per-Session Continuity Status The processor classifies each session as continuing, modified, released, replaced, unaffected, or unresolved, subject to the applicable evidence and lifecycle definitions. It may preserve several independent lifecycle dimensions. Output: Per-session result. 5.317. 1.C-36 - Evaluate Additional Evidence Requirements The processor identifies information that could distinguish competing states, such as a current SMF session record, relevant user-plane status, profile state, or operator mapping correction. Output: Evidence requirement set. 5.318. 1.C-37 - Reevaluate After Source Corrections If a SIM-related event or identity mapping is corrected, the processor identifies affected session assessments and reevaluates them. Historical assessments remain associated with their earlier source context. Output: Revised reconstruction. 5.319. 1.C-38 - Reevaluate After Resource or Function Changes If a session-management function restarts or a resource is replaced, the processor updates the relevant resource correspondence without automatically creating a new logical session. Output: Updated continuity context. 5.320. 1.C-39 - Preserve the Reconstruction History The system stores the event, source scope, identity correspondence, session impact set, governing conditions, observed effects, and unresolved states. It applies appropriate data minimization and access restrictions. Output: Reconstructible subscriber-event impact history. Das Expires 3 May 2027 [Page 159] Internet-Draft Telecom Session Operational Consistency October 2026 5.321. 1.C-40 - Produce the Session-Continuity Result The processor reports the supported relationship among the SIM- related event, affected sessions, governing conditions, and observed network effects. It does not convert uncertainty into a definitive session state. Output: C-V1 session-impact reconstruction. 5.322. 1.C.8. Technical Invariants C1-I01 - A SIM-change report is not automatically a PDU Session state-change report. C1-I02 - A positive SIM-swap signal is not proof of fraud. 5.323. C1-I03 - A negative bounded SIM-swap check is not proof of an unchanged lifetime history. C1-I04 - A null latest-change date is not necessarily proof of no change. C1-I05 - Mobile number, subscriber identifier, profile identifier, device identifier, and session identifier are not interchangeable. C1-I06 - Identity correspondence must be interpreted within applicable namespaces and generations. 5.324. C1-I07 - A reassigned mobile number must not automatically inherit the earlier subscriber's session history. C1-I08 - Device replacement does not automatically prove SIM replacement. C1-I09 - eSIM profile installation does not automatically prove enablement. 5.325. C1-I10 - eSIM profile enablement does not automatically prove successful network registration. C1-I11 - Profile disablement does not automatically prove completed network-session release. C1-I12 - A multi-profile device does not have one universally shared subscription state. Das Expires 3 May 2027 [Page 160] Internet-Draft Telecom Session Operational Consistency October 2026 C1-I13 - One subscriber may have several independently affected active sessions. C1-I14 - A subscriber-state event may affect one service without requiring identical changes to every service. C1-I15 - Source event time and notification arrival time are distinct. C1-I16 - Out-of-order event delivery must not automatically regress state. C1-I17 - Duplicate notification delivery is not necessarily a new SIM change. C1-I18 - Source correction is not automatically a new event. C1-I19 - Source monitoring coverage is distinct from source authentication. C1-I20 - A source can be authentic while its information remains incomplete. 5.326. C1-I21 - A subscriber-data notification does not itself prove an SMF-initiated procedure completed. C1-I22 - Network-operation acceptance is not automatically resource application. C1-I23 - Control-plane session release is not necessarily proof of completed user-plane cleanup. C1-I24 - Session database presence is not necessarily proof of current user-plane traffic. C1-I25 - User-plane resource replacement does not automatically create a new logical session. 5.327. C1-I26 - Session continuity does not require one unchanged network-function instance. C1-I27 - A new subscription context and an unresolved old session record may coexist without proving simultaneous malicious use. C1-I28 - A local timeout does not prove remote operation nonapplication. C1-I29 - Idempotency is determined by the receiver's actual contract. Das Expires 3 May 2027 [Page 161] Internet-Draft Telecom Session Operational Consistency October 2026 C1-I30 - A subscriber-associated risk signal may be relevant without establishing a network-session effect. C1-I31 - A SIM-related event does not automatically justify universal release of special or emergency services. C1-I32 - An operator's policy decision must be distinguished from technical evidence of resource state. C1-I33 - Session continuity and accounting continuity are different relationships. 5.328. C1-I34 - A change in resource identity does not automatically establish a second billable session. C1-I35 - Privacy-limited identity information must not be replaced with fabricated subscriber mappings. C1-I36 - Pseudonymization does not automatically eliminate privacy or linkage risks. 5.329. C1-I37 - An unresolved event-to-session correspondence cannot silently become established. 5.330. C1-I38 - A demonstrated inapplicable event must not be treated as merely missing data. C1-I39 - Several possible session states may remain under incomplete evidence. C1-I40 - A technically consistent reconstruction does not itself authorize network effectuation. C1-I41 - Historical continuity may remain valid despite a later subscription change. C1-I42 - Verification is limited to the specified source and session scope. C1-I43 - A single risk indicator need not determine a global session- lifecycle action. C1-I44 - Unknown source semantics cannot be repaired through arbitrary identifier equality. C1-I45 - A complete lifecycle conclusion requires the mandatory state dimensions of its stated objective. Das Expires 3 May 2027 [Page 162] Internet-Draft Telecom Session Operational Consistency October 2026 C1-I46 - Resource-state and subscriber-state revisions may lack a common total order. C1-I47 - A model-compatible transition is not necessarily the only physically possible transition. 5.331. C1-I48 - No claimed guarantee extends beyond the actual source, operator, and network-function contracts. 5.332. 1.C.9. Embodiment-Specific Mathematical Formulation The following mathematical formulation supplements C-CW-01. The separate Group C mathematical document shall provide the full workflow-level equations and assumptions. 5.333. 1.C.9.1. Identity Domains Let: | x | (M) denote mobile-line identifiers; | |---|---| | x | (P) denote SIM or profile references; | | x | (U) denote internal subscriber references; | | x | (S) denote logical session instances; | | x | (R) denote supporting network resources. | These are distinct identity domains. A mapping between two domains is represented as a supported relationship rather than equality. 5.334. 1.C.9.2. Time-Qualified Subscriber Mapping Define: [ I(m,u,t)\\in{T,F,U}, ] where (I) describes whether mobile-line identifier (m) corresponds to subscriber (u) at time or effective-state context (t). The predicate is established only where a sufficient source relationship exists. The same phone number may correspond to different subscribers at different periods. Das Expires 3 May 2027 [Page 163] Internet-Draft Telecom Session Operational Consistency October 2026 5.335. 1.C.9.3. Event Applicability For event (e) and session (s), define: [ A(e,s)=I\_e\\land T\_e\\land G\_e\\land Q\_e, ] where: | x | (I_e) is the required subscriber or profile identity correspondence; | |---|---| | x | (T_e) is temporal applicability; | | x | (G_e) is governing-condition and service-scope applicability; | | x | (Q_e) is any additional mandatory source- qualification condition. | Each term is evaluated in three-valued logic. A required FALSE condition establishes nonapplicability. An unresolved mandatory term prevents an unqualified applicable classification unless another required term is already FALSE. 5.336. 1.C.9.4. Candidate Session Impact Set For event (e), define: {s\\in S(e,s)\\neq F}. ] This set includes established and unresolved candidates. It is not equivalent to the set of conclusively affected sessions. Define the established affected subset as: {s\\in S(e,s)=T}. ] 5.337. 1.C.9.5. Event Effective-Time Interval Let an event have an effective time within: [ t\_e\\in[e^-,e^+]. ] Let a session's relevant state interval be: [ I\_s=[s^-,s^+]. ] An overlapping interval may establish possible temporal relevance. Das Expires 3 May 2027 [Page 164] Internet-Draft Telecom Session Operational Consistency October 2026 It does not by itself establish the identity or service-scope relationship. 5.338. 1.C.9.6. Source Lookback Limitation Suppose an external SIM-change check concerns interval: [ I\_q=[t\_q-H,t\_q], ] where (H) is the requested and supported lookback period. A negative result can support only the conclusion specified by the source's contract for (I\_q). It does not imply no change before (t\_q-H). 5.339. 1.C.9.7. Multi-Dimensional Session State Let a session's relevant state be: [ X\_s(t)= \\left( L\_s(t), G\_s(t), C\_s(t), R\_s(t), V\_s(t) \\right), ] where: | x | (L_s) is logical lifecycle state; | |---|---| | x | (G_s) is governing subscriber or service state; | | x | (C_s) is control-plane session state; | | x | (R_s) is network-resource state; | | x | (V_s) is required service observation state. | The components need not change simultaneously. 5.340. 1.C.9.8. Transition Feasibility For candidate transition (a), define: \\bigwedge\_{p\\in P\_a}p(X\_s). ] Here (P\_a) is the set of mandatory technical preconditions. The predicate evaluates technical feasibility under the model. It does not establish permission to execute (a). 5.341. 1.C.9.9. Resource-Generation Correspondence Let (r\_1) and (r\_2) represent two resource instances. Das Expires 3 May 2027 [Page 165] Internet-Draft Telecom Session Operational Consistency October 2026 Logical session continuity may exist across a resource change: [ s\\leftrightarrow r\_1 \\quad\\rightarrow\\quad s\\leftrightarrow r\_2. ] The transition is interpreted under the actual network procedure. The mere replacement of (r\_1) by (r\_2) does not prove that logical session (s) was terminated. 5.342. 1.C.9.10. Possible State Reconstruction Let (E) denote the available subscriber, control-plane, and user- plane evidence. The possible session-state set is: {X\\text{ is compatible with all established mandatory evidence}}. ] Where an operation outcome is unknown, the set may contain multiple possible states. The processor shall not arbitrarily select the desired one. 5.343. 1.C.9.11. Continuity Objective A selected network-continuity objective may require: [ C\_s= C\_{\\mathrm{logical}} \\land C\_{\\mathrm{governing}} \\land C\_{\\mathrm{resource}} \\land C\_{\\mathrm{service}}, ] where the included predicates depend upon the stated objective. A narrower objective may require fewer dimensions. The result must identify its scope. 5.344. 1.C.9.12. Change-Impact Reassessment For a corrected event, mapping, or resource observation (\\Delta), define the affected session assessments: {s(s)\\cap\\Delta\\neq\\varnothing}, ] where (D(s)) identifies the relevant assessment dependencies. An incomplete dependency index may require broader reevaluation. Das Expires 3 May 2027 [Page 166] Internet-Draft Telecom Session Operational Consistency October 2026 5.345. 1.C.9.13. Illustrative Lookback Example Suppose an API query occurs at 14:00 and checks the preceding 24 hours. The supported query window begins at 14:00 on the preceding day. A negative result under a complete applicable 24-hour reporting contract does not establish that the mobile-line association remained unchanged two days earlier. The processor retains the 24-hour limitation. 5.346. 1.C.9.14. Illustrative Session-Impact Example A subscriber has three sessions: | x | (s_1): enterprise data service; | |---|---| | x | (s_2): consumer data service; | | x | (s_3): service associated with a different subscription profile. | Suppose a governing-condition update specifically changes the enterprise service entitlement for the first subscription. The applicability model may establish: [ A(e,s\_1)=T, ] [ A(e,s\_2)=F, ] [ A(e,s\_3)=F. ] The event does not become a universal three-session release request merely because all sessions are present on one device. 5.347. 1.C.10. Implementable Pseudocode - C-ALG-02 5.348. 1.C.10.1. Technical Types ENUM Verdict: COMPATIBLE INCOMPATIBLE UNRESOLVED ENUM EventKind: MOBILE\_LINE\_SIM\_ASSOCIATION\_CHANGE Das Expires 3 May 2027 [Page 167] Internet-Draft Telecom Session Operational Consistency October 2026 SUBSCRIPTION\_DATA\_UPDATE PROFILE\_INSTALLED PROFILE\_ENABLED PROFILE\_DISABLED PROFILE\_DELETED DEVICE\_ASSOCIATION\_CHANGE NUMBER\_PORTABILITY\_EVENT NUMBER\_REASSIGNMENT HISTORICAL\_SIM\_SWAP\_CHECK EVENT\_CORRECTION UNKNOWN\_EVENT ENUM SessionOutcome: CONTINUING\_ESTABLISHED MODIFIED\_ESTABLISHED RELEASED\_ESTABLISHED REPLACED\_ESTABLISHED UNAFFECTED\_ESTABLISHED PARTIAL\_TRANSITION OUTCOME\_UNKNOWN TYPE SessionCandidate: logical\_session\_reference subscriber\_generation service\_scope resource\_references governing\_state operation\_status observed\_session\_state TYPE SubscriberEvent: source source\_generation event\_reference event\_kind subject effective\_context monitoring\_limits change\_scope evidence\_reference 5.349. 1.C.10.2. Qualify the Event FUNCTION QUALIFY\_SIM\_RELATED\_EVENT( event, source\_registry ): source\_contract = source\_registry.RESOLVE( event.source, event.source\_generation ) identity = CHECK\_EVENT\_IDENTITY( event, source\_contract ) semantics = INTERPRET\_EVENT\_KIND( event, source\_contract ) timing = RESOLVE\_EFFECTIVE\_INTERVAL( event, source\_contract ) coverage = EVALUATE\_SOURCE\_MONITORING\_LIMITS( Das Expires 3 May 2027 [Page 168] Internet-Draft Telecom Session Operational Consistency October 2026 event, source\_contract ) RETURN { identity, semantics, timing, coverage, raw\_evidence\_reference: event.evidence\_reference } 5.350. 1.C.10.3. Resolve Subscriber Correspondence FUNCTION RESOLVE\_SUBSCRIBER\_CONTEXT( event, permitted\_mapping\_service ): mapping = permitted\_mapping\_service.RESOLVE( subject = event.subject, effective\_context = event.effective\_context ) IF mapping conclusively incompatible: RETURN INCOMPATIBLE IF mapping insufficient: RETURN UNRESOLVED( "SUBSCRIBER\_MAPPING\_NOT\_ESTABLISHED" ) RETURN { subscriber\_reference: mapping.scoped\_reference, subscriber\_generation: mapping.generation, mapping\_evidence: mapping.evidence, permitted\_scope: mapping.scope } No caller is entitled to obtain raw internal identifiers merely because it can request an eventto-session assessment. 5.351. 1.C.10.4. Enumerate Candidate Sessions FUNCTION FIND\_EVENT\_RELEVANT\_SESSIONS( subscriber\_context, session\_inventory ): candidates = session\_inventory.QUERY( subscriber\_reference = subscriber\_context.scoped\_reference, relevant\_time\_context = Das Expires 3 May 2027 [Page 169] Internet-Draft Telecom Session Operational Consistency October 2026 subscriber\_context.effective\_context ) RETURN CLASSIFY\_SESSION\_GENERATIONS( candidates, subscriber\_context ) 5.352. 1.C.10.5. Evaluate Per-Session Applicability FUNCTION EVALUATE\_EVENT\_APPLICABILITY( event, subscriber\_context, session ): identity = CHECK\_IDENTITY\_CORRESPONDENCE( event, subscriber\_context, session ) temporal = CHECK\_EFFECTIVE\_STATE\_RELATION( event, session ) service = CHECK\_SERVICE\_SCOPE( event, session ) profile = CHECK\_PROFILE\_APPLICABILITY( event, session ) results = [ identity, temporal, service, profile ] IF any mandatory result == INCOMPATIBLE: RETURN INCOMPATIBLE IF any mandatory result == UNRESOLVED: RETURN UNRESOLVED RETURN COMPATIBLE 5.353. 1.C.10.6. Construct Session Transition Candidates FUNCTION CONSTRUCT\_SESSION\_TRANSITIONS( event, session, governing\_state, standards\_procedure\_model ): Das Expires 3 May 2027 [Page 170] Internet-Draft Telecom Session Operational Consistency October 2026 affected\_conditions = IDENTIFY\_CHANGED\_GOVERNING\_CONDITIONS( event, session ) candidate\_procedures = standards\_procedure\_model.FIND\_APPLICABLE( affected\_conditions, session ) RETURN BUILD\_TECHNICAL\_TRANSITION\_CANDIDATES( candidate\_procedures, governing\_state, session ) This function references existing procedure semantics; it does not invent standard subscriberupdate or session-release procedures. 5.354. 1.C.10.7. Reconcile Network Effects FUNCTION RECONCILE\_SESSION\_EFFECTS( session, transition, status\_sources, resource\_sources ): operation = RESOLVE\_RELATED\_LIFECYCLE\_OPERATION( session, transition ) receiver\_status = INTERPRET\_RECEIVER\_LIFECYCLE\_STATUS( operation, status\_sources ) control\_state = OBSERVE\_APPLICABLE\_CONTROL\_PLANE\_STATE( session ) resource\_state = OBSERVE\_APPLICABLE\_USER\_PLANE\_STATE( session, resource\_sources ) service\_state = Das Expires 3 May 2027 [Page 171] Internet-Draft Telecom Session Operational Consistency October 2026 OBSERVE\_REQUIRED\_SERVICE\_STATE( session ) RETURN COMBINE\_SCOPE\_QUALIFIED\_STATES( receiver\_status, control\_state, resource\_state, service\_state ) 5.355. 1.C.10.8. Handle Unknown Remote State FUNCTION RECONCILE\_UNKNOWN\_SESSION\_OUTCOME( operation, receiver, resource\_observer ): IF receiver supports status query: status = receiver.QUERY( operation.original\_reference ) IF status establishes required outcome: RETURN status observed\_state = resource\_observer.READ\_RELEVANT\_STATE( operation.target\_session ) IF observed\_state establishes one required state condition: RETURN { state\_condition: COMPATIBLE, operation\_attribution: EVALUATE\_ATTRIBUTION\_SEPARATELY() } RETURN UNRESOLVED( "SESSION\_OPERATION\_OUTCOME\_UNKNOWN" ) 5.356. 1.C.10.9. Reconcile Concurrent Subscription Profiles FUNCTION EVALUATE\_MULTI\_PROFILE\_IMPACT( event, device\_context, session\_inventory ): Das Expires 3 May 2027 [Page 172] Internet-Draft Telecom Session Operational Consistency October 2026 affected\_profile = RESOLVE\_EVENT\_PROFILE(event) results = [] FOR EACH profile IN device\_context.profiles: relation = CHECK\_PROFILE\_IDENTITY\_AND\_GENERATION( affected\_profile, profile ) sessions = FIND\_PROFILE\_ASSOCIATED\_SESSIONS( profile, session\_inventory ) FOR EACH session IN sessions: ADD { session, event\_applicability: EVALUATE\_PROFILE\_SESSION\_RELATION( relation, event, session ) } TO results RETURN results 5.357. 1.C.10.10. Reconcile Residual Earlier Sessions FUNCTION EVALUATE\_RESIDUAL\_SESSION\_CONTEXTS( event, earlier\_sessions, current\_session\_inventory ): results = [] FOR EACH old\_session IN earlier\_sessions: logical = OBSERVE\_LOGICAL\_SESSION\_STATUS( old\_session ) Das Expires 3 May 2027 [Page 173] Internet-Draft Telecom Session Operational Consistency October 2026 control = OBSERVE\_CONTROL\_CONTEXT( old\_session ) resources = OBSERVE\_RESOURCE\_STATUS( old\_session ) evidence = CHECK\_SOURCE\_COVERAGE( old\_session ) ADD BUILD\_RESIDUAL\_CONTEXT\_RESULT( logical, control, resources, evidence ) TO results RETURN results An old session record does not by itself establish ongoing traffic. 5.358. 1.C.10.11. Reevaluate After a Mapping Correction FUNCTION PROCESS\_IDENTITY\_MAPPING\_CORRECTION( correction, assessment\_dependency\_index, session\_repository ): affected = assessment\_dependency\_index.FIND\_AFFECTED( correction ) IF dependency coverage incomplete: affected = EXPAND\_RECONSTRUCTION\_SCOPE() FOR EACH assessment IN affected: revised = RECONSTRUCT\_SESSION\_IMPACT( assessment.event, corrected\_identity\_context ) STORE\_RECONSTRUCTION\_REVISION( assessment, revised ) RETURN affected Das Expires 3 May 2027 [Page 174] Internet-Draft Telecom Session Operational Consistency October 2026 5.359. 1.C.10.12. Complete Embodiment Algorithm FUNCTION PROCESS\_SIM\_RELATED\_SESSION\_EVENT( incoming\_event ): event = QUALIFY\_SIM\_RELATED\_EVENT( incoming\_event, SOURCE\_REGISTRY() ) subscriber = RESOLVE\_SUBSCRIBER\_CONTEXT( event, PERMITTED\_IDENTITY\_MAPPING\_SERVICE() ) IF subscriber == INCOMPATIBLE: RETURN RECORD\_NONAPPLICABLE\_EVENT() IF subscriber == UNRESOLVED: RETURN RECORD\_UNRESOLVED\_EVENT\_MAPPING() sessions = FIND\_EVENT\_RELEVANT\_SESSIONS( subscriber, SESSION\_INVENTORY() ) results = [] FOR EACH session IN sessions: applicability = EVALUATE\_EVENT\_APPLICABILITY( event, subscriber, session ) IF applicability == INCOMPATIBLE: ADD UNAFFECTED\_SESSION\_ASSESSMENT( session ) TO results CONTINUE IF applicability == UNRESOLVED: Das Expires 3 May 2027 [Page 175] Internet-Draft Telecom Session Operational Consistency October 2026 ADD UNRESOLVED\_SESSION\_ASSESSMENT( session ) TO results CONTINUE transitions = CONSTRUCT\_SESSION\_TRANSITIONS( event, session, CURRENT\_GOVERNING\_STATE(session), APPLICABLE\_PROCEDURE\_MODEL() ) FOR EACH transition IN transitions: feasibility = EVALUATE\_TRANSITION\_PRECONDITIONS( transition ) IF corresponding operation separately performed: effects = RECONCILE\_SESSION\_EFFECTS( session, transition, STATUS\_SOURCES(), RESOURCE\_SOURCES() ) ELSE: effects = NO\_OPERATION\_EFFECT\_ESTABLISHED ADD BUILD\_SESSION\_TRANSITION\_RESULT( session, transition, feasibility, effects ) TO results residual = EVALUATE\_RESIDUAL\_SESSION\_CONTEXTS( event, RELEVANT\_EARLIER\_SESSIONS(), SESSION\_INVENTORY() ) reconstruction = BUILD\_SESSION\_IMPACT\_RESULT( event, subscriber, sessions, results, residual ) STORE\_VERSIONED\_RECONSTRUCTION(reconstruction) RETURN reconstruction Das Expires 3 May 2027 [Page 176] Internet-Draft Telecom Session Operational Consistency October 2026 The algorithm evaluates session consequences. It does not independently submit or authorize consequential network operations. 5.360. 1.C.11. Worked Technical Examples 5.361. 1.C.11.1. Example 1 - Recent SIM Change While Data Session Remains Recorded An external risk-information API reports that the mobile line experienced a SIM change within the preceding 24 hours. The application has no access to the subscriber's internal session identity. The network operator separately maintains an active PDU Session record. The processor does not directly join the external boolean result to the PDU Session. It requires a permitted, supported subscriber correspondence. Until that correspondence is available, the event is known at the mobile-line level but its effect on the particular session remains unresolved. 5.362. 1.C.11.2. Example 2 - A Legitimate Replacement SIM A subscriber replaces a damaged physical SIM. The operator records the replacement. The subscriber establishes connectivity using the new SIM. An external fraud-prevention application may treat the recent change as a risk signal under its own policies. The session-continuity processor independently evaluates which older and newer session contexts are present. It does not label the replacement malicious merely because it was recent. 5.363. 1.C.11.3. Example 3 - No SIM Change Within the Lookback Period An API reports swapped = false for a supported 48-hour query. Das Expires 3 May 2027 [Page 177] Internet-Draft Telecom Session Operational Consistency October 2026 The processor records that the source did not report a swap within the specified interval under the actual API contract. It does not infer that the subscriber association was unchanged for the preceding year. If an active session was established before the lookback interval, the negative response does not by itself prove its entire historical association. 5.364. 1.C.11.4. Example 4 - Null Latest-Change Date A mobile-line information service cannot disclose the latest SIM change timestamp and returns a null value with a documented monitoring limitation. The processor retains the limitation. It does not interpret null as never changed. Any session-level consequence must be evaluated through other sufficient information. 5.365. 1.C.11.5. Example 5 - Three PDU Sessions, One Affected Service A subscriber has three active sessions: | Session | Service | State | |---|---|---| | S1 | Enterprise connectivity Active | | | S2 | Consumer connectivity Active | | | S3 | Separate service context Active | | A subscriber-data revision affects only the enterprise service condition. The system evaluates S1 as potentially requiring a transition. S2 and S3 need not receive the same transition under the stated model. The result is per session, not a blanket subscriber-wide release. 5.366. 1.C.11.6. Example 6 - Profile Installed but Not Enabled A device downloads and installs an eSIM profile. The profile remains disabled. The profile-management source reports the successful installation. Das Expires 3 May 2027 [Page 178] Internet-Draft Telecom Session Operational Consistency October 2026 The processor does not infer that network registration under the new profile succeeded. It does not infer an active PDU Session associated with the profile. 5.367. 1.C.11.7. Example 7 - Multiple Enabled Profiles A supported device has two enabled profiles, P1 and P2. A profile-management operation changes P1's state. P2 remains enabled. The processor evaluates sessions associated with P1 separately from those associated with P2. It does not assume every session on the device must be terminated. 5.368. 1.C.11.8. Example 8 - Device Change Without Subscriber Change A subscriber moves a supported subscription to another device. The device association changes. The internal subscriber reference remains applicable. The processor distinguishes device association from subscriber association and evaluates actual session changes. A new physical device does not automatically establish a new mobile- line owner. 5.369. 1.C.11.9. Example 9 - Mobile Number Reassignment A phone number was previously associated with Subscriber A. It is later reassigned to Subscriber B. An external application retains historical records keyed only by the phone number. The processor identifies the distinct subscriber generations. It does not merge Subscriber A's earlier sessions with Subscriber B's current sessions simply because the displayed mobile number is the same. Das Expires 3 May 2027 [Page 179] Internet-Draft Telecom Session Operational Consistency October 2026 5.370. 1.C.11.10. Example 10 - Notification Arrives Late An operator association change is effective at 10:00. The event reaches an external processor at 10:08. A session transition occurred at 10:03. The processor evaluates the event using its supported effective time rather than assuming it occurred at 10:08. The event may be relevant to the transition even though its notification arrived later. 5.371. 1.C.11.11. Example 11 - Out-of-Order Subscription Revisions A subscription system produces revision 41 and later revision 42. The receiver observes revision 42 first. Revision 41 arrives afterward. If the source contract establishes a monotonic revision ordering within the subscription object, the processor does not overwrite revision 42 with revision 41. It retains revision 41 as historical or delayed evidence. 5.372. 1.C.11.12. Example 12 - Duplicate SIM-Change Notification An event-subscription service sends the same SIM-change notification twice. The processor identifies the duplicate using the source-qualified event reference and applicable delivery semantics. The event is not counted as two independent SIM changes. If the source does not provide a stable event identity, deduplication may remain probabilistic or unresolved rather than asserted as exact. 5.373. 1.C.11.13. Example 13 - Subscription Update Followed by Pending Session Modification A subscription-data source reports an updated service condition. The session-management function receives the update and initiates a modification. Das Expires 3 May 2027 [Page 180] Internet-Draft Telecom Session Operational Consistency October 2026 The receiver accepts processing. The relevant user-plane state still reflects the previous configuration. The processor reports: | x | subscriber-state update established; | |---|---| | x | session modification initiated; | | x | receiver acceptance established; | | x | intended user-plane effect not yet established. | It does not prematurely report completed modification. 5.374. 1.C.11.14. Example 14 - Session Release with Lost Response A session-release request is transmitted. The response is lost. The processor records unknown remote outcome. A later control-plane query shows the session context absent, while user-plane release evidence remains unavailable. The result may establish a specific logical-state condition while retaining unresolved resource cleanup. 5.375. 1.C.11.15. Example 15 - New Session While Old Context Persists A subscriber establishes a new session after a subscription- association change. An earlier session record remains in an operator database. The system evaluates whether the old record is stale, in release processing, or still associated with active resources. The coexistence of two records does not automatically establish active unauthorized simultaneous use. 5.376. 1.C.11.16. Example 16 - Emergency-Service Exception A general subscriber-state risk signal is received. An emergency-related session is present. The system evaluates the actual session and service rules. Das Expires 3 May 2027 [Page 181] Internet-Draft Telecom Session Operational Consistency October 2026 It does not assume that the same transition used for ordinary data services automatically applies. The appropriate network procedures and legal requirements remain controlling. 5.377. 1.C.11.17. Example 17 - Function Replacement Without Session Replacement A session-management function is replaced after a software failure. The successor reconstructs the relevant logical session context under the supported network procedure. The processor preserves the logical session relationship while recording the function-instance transition. It does not create an independent new session solely because the controlling process changed. 5.378. 1.C.11.18. Example 18 - Application Risk and Network Continuity Disagree Without Contradiction A fraud-prevention application classifies a recent SIM swap as elevated risk. The network operator independently establishes that a particular data session remains active under its applicable current state. These findings need not be contradictory. The first concerns the application's risk assessment. The second concerns observed network-session continuity. The processor records the distinction instead of forcing one result to overwrite the other. 5.379. 1.C.12. Specific Design-Around Alternatives and Implementation Pathways The following 36 alternatives provide materially different technical implementations. Each identifies its mechanism, relevant limitations, failure treatment, and representative test. Das Expires 3 May 2027 [Page 182] Internet-Draft Telecom Session Operational Consistency October 2026 They are non-limiting technical pathways, not assertions of legal equivalence. 5.380. C-1-DA-01 - Operator-Internal Subscriber-to-Session Resolver Mechanism: An operator-internal service maps the qualified subscriber event to relevant active session contexts. Implementation: The resolver uses supported internal subscriber and session identifiers and their applicable generations. Limitation: The mapping may be incomplete after function failure or reassignment. Failure handling: Missing mappings remain unresolved. Test: Reassign a mobile number and verify separation of earlier and current subscriber sessions. 5.381. C-1-DA-02 - Privacy-Minimized External Event Resolver Mechanism: An external application receives only an operator-approved limited association result. Implementation: The operator evaluates the subscriber mapping internally and returns a scoped assessment rather than raw network identifiers. Limitation: The external processor may not reconstruct full internal resource detail. Failure handling: Unexposed relationships remain unresolved. Test: Compare complete operator-internal assessment with limited external output. Das Expires 3 May 2027 [Page 183] Internet-Draft Telecom Session Operational Consistency October 2026 5.382. C-1-DA-03 - Historical SIM-Swap Query Adapter Mechanism: The system obtains a bounded historical SIM-change result through a supported API. Implementation: It records the requested lookback period, query time, response meaning, and monitoring limitations. Limitation: The result may not cover earlier history. Failure handling: Negative or null values are not expanded beyond the contract. Test: Query a 24-hour window when the known change occurred 48 hours earlier. 5.383. C-1-DA-04 - Event-Subscription-Based SIM-Change Processing Mechanism: A supported notification subscription delivers SIM-related events. Implementation: The processor maintains subscription identity, event references, and source coverage. Limitation: Notifications may be delayed, duplicated, or unavailable during subscription interruption. Failure handling: Delivery gaps remain qualified. Test: Drop one event and replay another. 5.384. C-1-DA-05 - Subscriber-Data Notification Adapter Mechanism: The processor uses applicable operator subscription-data notifications. Implementation: It associates changed subscriber-management information with the affected session contexts. Das Expires 3 May 2027 [Page 184] Internet-Draft Telecom Session Operational Consistency October 2026 Limitation: A notification does not prove the subsequent session procedure completed. Failure handling: Control-plane and user-plane effects are observed separately. Test: Notify a subscriber update and delay the resulting session modification. 5.385. C-1-DA-06 - Multi-Source Event-Semantic Reconciliation Mechanism: The system distinguishes operator, device, risk-API, and profile-management events. Implementation: Each event is interpreted according to its source type and declared information model. Limitation: Different sources may report related but nonidentical changes. Failure handling: Unresolved semantic correspondence remains explicit. Test: Report one device change and one SIM-change check with different underlying causes. 5.386. C-1-DA-07 - Source-Versioned Association History Mechanism: Subscriber mappings are stored as versioned records. Implementation: The processor reconstructs which association was applicable during a particular session interval. Limitation: Historical data may be missing. Failure handling: Unknown history is not replaced by current mapping. Test: Reassign an identifier and query an earlier session. Das Expires 3 May 2027 [Page 185] Internet-Draft Telecom Session Operational Consistency October 2026 5.387. C-1-DA-08 - Event-Sourced Subscriber-Session Reconstruction Mechanism: A sequence of qualified events reconstructs changes to subscriber and session relationships. Implementation: The processor replays applicable source records under their ordering semantics. Limitation: Missing events may prevent unique reconstruction. Failure handling: Multiple possible states are retained. Test: Remove one material association event. 5.388. C-1-DA-09 - Snapshot-and-Delta Session Reconstruction Mechanism: A saved subscriber-session snapshot is combined with subsequent updates. Implementation: Each delta is associated with its source revision or effective context. Limitation: Snapshot and delta generations must correspond. Failure handling: Version gaps produce unresolved state. Test: Apply updates in shuffled delivery order. 5.389. C-1-DA-10 - Relational Identity Correspondence Mechanism: Subscriber, profile, device, and session references are represented in conventional database tables. Implementation: Time-qualified joins determine candidate session associations. Limitation: Database relationships may not represent all network operational effects. Failure handling: Missing joins do not establish absence where coverage is incomplete. Das Expires 3 May 2027 [Page 186] Internet-Draft Telecom Session Operational Consistency October 2026 Test: Compare relational results against controlled identity histories. 5.390. C-1-DA-11 - Graph-Based Association Reconstruction Mechanism: Different identity domains and session resources are represented through typed relationships. Implementation: The processor traverses applicable subscriber-to- session edges. Limitation: Graph reachability does not establish current network operation. Failure handling: State applicability is evaluated separately. Test: Insert a stale historical mapping edge. 5.391. C-1-DA-12 - Constraint-Based Identity and Session Matching Mechanism: A solver evaluates possible subscriber-session mappings under identity, time, and resource constraints. Implementation: Compatible mapping assignments are retained. Limitation: Incomplete constraints may admit several possibilities. Failure handling: No unique subscriber identity is fabricated. Test: Supply ambiguous mappings and verify multiple consistent solutions. 5.392. C-1-DA-13 - Time-Interval-Based Event Applicability Mechanism: Events and sessions are associated with supported effective-time intervals. Implementation: The processor evaluates whether the intervals permit the required relationship. Limitation: Overlap alone does not prove identity or causation. Das Expires 3 May 2027 [Page 187] Internet-Draft Telecom Session Operational Consistency October 2026 Failure handling: Ambiguous temporal relationships remain unresolved. Test: Introduce delayed notifications and overlapping time uncertainty. 5.393. C-1-DA-14 - Logical Event-Ordering-Based Applicability Mechanism: The processor uses source-provided ordering or dependency references where timestamps are uncertain. Implementation: Relevant event predecessors and successors constrain reconstruction. Limitation: Logical order does not necessarily establish elapsed physical time. Failure handling: Missing order relations remain unresolved. Test: Reorder network delivery while preserving source event order. 5.394. C-1-DA-15 - Device and Subscription Identity Separation Mechanism: The system maintains distinct device, subscription, profile, and session associations. Implementation: A device change updates the device relationship without automatically changing subscriber identity. Limitation: Device mapping may not be available to an external service. Failure handling: Missing device correspondence is recorded. Test: Move the same subscription to another device. 5.395. C-1-DA-16 - eSIM Profile-State Adapter Mechanism: The processor consumes supported eSIM profile-management information. Implementation: Install, enable, disable, and delete operations are distinguished. Das Expires 3 May 2027 [Page 188] Internet-Draft Telecom Session Operational Consistency October 2026 Limitation: Profile state is not a complete network-session state. Failure handling: Missing registration and session evidence remains unresolved. Test: Install a profile without enabling it. 5.396. C-1-DA-17 - Multiple Enabled Profile Processing Mechanism: Several subscriptions are maintained independently on one supported device. Implementation: Session mappings are associated with the relevant profile and subscription generation. Limitation: Device and modem capabilities may constrain simultaneous behavior. Failure handling: Unsupported concurrency assumptions are not imposed. Test: Disable one enabled profile while another profile's session remains present. 5.397. C-1-DA-18 - Multiple Active PDU Session Evaluation Mechanism: One subscriber has several active PDU Session contexts. Implementation: The processor checks event applicability for each session's service and governing conditions. Limitation: Subscription updates may use different service-specific rules. Failure handling: No blanket transition is assumed. Test: Modify one enterprise service entitlement while other sessions remain unchanged. 5.398. C-1-DA-19 - Scope-Specific Subscriber-Policy Reconciliation Mechanism: A changed subscriber condition is associated with selected network services. Das Expires 3 May 2027 [Page 189] Internet-Draft Telecom Session Operational Consistency October 2026 Implementation: The processor evaluates service-specific applicability before interpreting a session transition. Limitation: The scope may be incompletely specified. Failure handling: Unclear affected services remain unresolved. Test: Update one DNN-related condition among several active sessions. 5.399. C-1-DA-20 - Existing SMF Procedure Correspondence Mechanism: The processor relates subscriber-data changes to resulting standardized session- management procedures. Implementation: Notification, modification or release, and resource effects are tracked separately. Limitation: The precise procedure depends upon the deployment and 3GPP context. Failure handling: Acceptance without observed effect is not completion. Test: Deliver a subscription-data notification but delay the SMF's resulting procedure. 5.400. C-1-DA-21 - User-Plane Observation-Based Continuity Mechanism: The processor obtains supporting user-plane state for an affected session. Implementation: It relates relevant rules or resource instances to the session and its governing revision. Limitation: User-plane state may be partially observable. Failure handling: Incomplete resource visibility is retained. Test: Remove the control-plane session record while leaving a simulated user-plane rule Das Expires 3 May 2027 [Page 190] Internet-Draft Telecom Session Operational Consistency October 2026 installed. 5.401. C-1-DA-22 - Service-Observation-Based Continuity Mechanism: The system observes the service behavior associated with the session. Implementation: It checks relevant reachability or QoS properties under the required observation scope. Limitation: Service success alone may not establish all subscriber or control-plane details. Failure handling: Unobserved dimensions remain separate. Test: Maintain application connectivity while one control-plane state is stale. 5.402. C-1-DA-23 - Asynchronous Transition Outcome Reconciliation Mechanism: Session procedures are tracked through their supported receiver and resource states. Implementation: A lost response is reconciled through native status or resource observations. Limitation: No universal exactly-once execution guarantee is assumed. Failure handling: Unknown outcomes remain explicit. Test: Apply a release and drop its response. 5.403. C-1-DA-24 - Conditional Session-Modification Processing Mechanism: A receiver-supported condition is used where appropriate. Implementation: The transition request refers to an applicable resource or session-state precondition. Das Expires 3 May 2027 [Page 191] Internet-Draft Telecom Session Operational Consistency October 2026 Limitation: The conditional scope may not cover every indirect resource dependency. Failure handling: Failed conditions trigger reassessment. Test: Change the session state before submitting a conditional modification. 5.404. C-1-DA-25 - Residual Session Context Reconciliation Mechanism: Older session records are inspected after a subscriber association change. Implementation: The processor distinguishes logical state, resource presence, and actual traffic evidence. Limitation: A stale record may be difficult to classify conclusively. Failure handling: Presence is not automatically treated as active misuse. Test: Keep an old session database entry after underlying resource release. 5.405. C-1-DA-26 - Network Function Replacement Continuity Mechanism: Logical sessions are associated across network-function instance replacement. Implementation: The processor records function-generation changes and supported session continuity mappings. Limitation: Restoration semantics depend upon the network architecture. Failure handling: Unknown predecessor state remains explicit. Test: Replace a session-management process while preserving a logical session reference. 5.406. C-1-DA-27 - Mobile Number Portability Correspondence Mechanism: Operator and number-portability records are interpreted separately from SIM and session identities. Das Expires 3 May 2027 [Page 192] Internet-Draft Telecom Session Operational Consistency October 2026 Implementation: The processor determines relevant home or serving operator correspondence for the event. Limitation: An external application may lack sufficient internal mapping detail. Failure handling: Cross-operator association remains unresolved if unsupported. Test: Port a number while distinguishing subscriber continuity from operator change. 5.407. C-1-DA-28 - Mobile Number Reassignment Protection Mechanism: Historical associations are separated by subscriber generation or effective interval. Implementation: The processor prevents current-number matching from silently merging distinct subscriber histories. Limitation: Some legacy records may lack generation information. Failure handling: Ambiguous historical matches are rejected or qualified. Test: Reuse one number for two different subscribers in successive periods. 5.408. C-1-DA-29 - Privacy-Minimizing Session Impact Reporting Mechanism: The processor publishes only the event-to-session findings required by the requesting function. Implementation: Internal subscriber mapping remains within permitted boundaries. Limitation: The recipient may not be able to independently reconstruct the full mapping. Failure handling: Limited disclosure is represented as limited evidentiary scope. Das Expires 3 May 2027 [Page 193] Internet-Draft Telecom Session Operational Consistency October 2026 Test: Verify that external output does not reveal raw subscriber or profile identifiers unnecessarily. 5.409. C-1-DA-30 - Subscriber Event Correction and Revision Handling Mechanism: Corrected source records trigger selective session reassessment. Implementation: The processor maintains event revisions and dependent session assessments. Limitation: Source corrections may arrive after network effects occur. Failure handling: Historical outcome and current corrective needs are kept separate. Test: Correct an earlier subscriber mapping after a session transition. 5.410. C-1-DA-31 - Concurrent Change-Conflict Evaluation Mechanism: Several subscriber or session operations may overlap. Implementation: The processor evaluates their relevant state dependencies and receiver semantics. Limitation: Source versions from separate systems may not share a total order. Failure handling: Unsupported ordering is not invented. Test: Submit a service modification while a related session release is pending. 5.411. C-1-DA-32 - Special-Service Exception Handling Mechanism: Sessions subject to specific service or regulatory requirements are evaluated under their applicable procedures. Das Expires 3 May 2027 [Page 194] Internet-Draft Telecom Session Operational Consistency October 2026 Implementation: The processor identifies required exception conditions and avoids generic blanket transitions. Limitation: The technical and legal requirements vary by service and jurisdiction. Failure handling: Unsupported generic termination assumptions are not applied. Test: Include a specially governed service alongside ordinary data sessions. 5.412. C-1-DA-33 - Hardware- or Device-Originated Profile Evidence Mechanism: Device or secure-element management information supplies evidence about a profile's state. Implementation: The processor associates the observation with the correct profile generation and device context. Limitation: Device-side profile evidence does not establish all core- network effects. Failure handling: Missing network registration or PDU Session evidence remains unresolved. Test: Report successful device-side profile activation while network registration fails. 5.413. C-1-DA-34 - Cryptographically Authenticated Subscriber Events Mechanism: Event records may be authenticated and integrity-protected under an existing source contract. Implementation: The processor verifies provenance and separately checks event scope, freshness, and session applicability. Das Expires 3 May 2027 [Page 195] Internet-Draft Telecom Session Operational Consistency October 2026 Limitation: Authenticity does not prove the session was changed or that the event is benign or malicious. Failure handling: Stale but authentic events are not treated as current. Test: Replay an authentic older notification after a later subscriber revision. 5.414. C-1-DA-35 - Federated Operator-Local Impact Reconstruction Mechanism: The operator performs session impact analysis locally and exchanges a qualified result with another authorized domain. Implementation: The result contains relevant session continuity or uncertainty information without exposing all internal identity mappings. Limitation: The external domain may have only an abstract view. Failure handling: Unexposed internal state is not fabricated. Test: Compare a full local reconstruction with the information available through a limited federation response. 5.415. C-1-DA-36 - Deterministic and Statistical Hybrid Assessment Mechanism: Deterministic identity and session-state requirements may be combined with a separate probabilistic assessment where the deployment actually supports one. Implementation: Mandatory identity and resource correspondence are evaluated independently of any risk score. Limitation: Statistical risk cannot substitute for a missing mandatory session mapping. Das Expires 3 May 2027 [Page 196] Internet-Draft Telecom Session Operational Consistency October 2026 Failure handling: Uncalibrated risk estimates are qualified and network-state unknowns remain unknown. Test: Supply a high fraud-risk score with no established session- state change and verify that the two results remain distinct. 5.416. 1.C.13. Technical Design-Around Correspondence The alternatives provide different means of implementing event-to- session reconciliation. A centralized operator may use internal subscriber and session mappings. A federated deployment may publish only qualified, scoped results. A constrained system may use relational records. Another may use graph relationships or a constraint solver. One deployment may reconstruct session history through events. Another may combine snapshots and revisions. An eSIM environment may obtain profile-management state. A conventional mobile-core environment may use subscriber and session-management information. An external application may rely solely upon a limited SIM-swap information API. These implementations have materially different visibility and guarantees. In particular: | x | an external SIM-swap API does not automatically expose active PDU Session identity; | |---|---| | x | a profile manager does not automatically establish user-plane state; | | x | a subscriber-data update notification does not prove a subsequent session procedure completed; | | x | a mobile-number match does not establish subscriber identity across reassignment; | | x | a current session record does not necessarily prove historical subscriber mapping; | | Das Expires 3 May 2027 [Page 197] Internet-Draft Telecom Session Operational Consistency October 2026 x | a device identifier does not replace the subscription identifier; | | x | a signed event can remain stale; | | x | a delayed event may require retrospective interpretation; and | | x | a risk classification does not independently justify a network-state transition. | The common technical relationship is the evaluation of an event's actual subscriber and service scope against the applicable active-session identities and observed network effects. The implementation variations may support different dependent limitations. This technical profile is constrained by the source-defined operation, observation, identity, timing and state relationships. Other profiles are applicable only where their independently required interfaces and guarantees are established. 5.417. 1.C.14. PHOSITA Reference Implementation 5.418. 1.C.14.1. Reference System A practical software implementation may contain: Subscriber database simulator: Maintains subscription generations and relevant service conditions. Mobile-line association simulator: Produces mobile-number-to-SIM association changes. eSIM profile simulator: Separately models profile installation, enablement, disablement, and deletion. Device and multi-profile simulator: Represents multiple subscription contexts on one device. SIM-change API simulator: Provides bounded lookback checks and latest-change information according to a selected contract. Das Expires 3 May 2027 [Page 198] Internet-Draft Telecom Session Operational Consistency October 2026 Event-subscription simulator: Delivers SIM-change notifications with controlled delay and duplication. Session-management simulator: Maintains logical session contexts and existing modification or release procedures. User-plane simulator: Represents session-associated forwarding and QoS resources. Identity mapping service: Maintains time-qualified internal correspondence between events and subscribers. Event-semantic classifier: Determines what each source actually reports. Session impact evaluator: Computes per-session event applicability. Transition candidate processor: Constructs the relevant existing lifecycle options. Effect observer: Collects control-plane and user-plane state after transitions. History repository: Stores source-qualified events and assessment revisions. Privacy filter: Limits exposure of sensitive internal identifiers. Test harness: Supplies independent ground truth for each synthetic event and session. The components may run on one workstation without live operator infrastructure. The simulator should maintain the true subscriber mappings and actual session/resource states separately from the reconstruction engine. 5.419. 1.C.14.2. Minimum Synthetic Dataset The reference dataset should include: Das Expires 3 May 2027 [Page 199] Internet-Draft Telecom Session Operational Consistency October 2026 | x | two distinct subscriber generations; | |---|---| | x | three active sessions under one subscriber; | | x | a separate subscription profile on one device; | | x | one eSIM profile installation without enablement; | | x | one SIM-change event with bounded historical coverage; | | x | one delayed event; | | x | one duplicated event; | | x | one corrected mapping; | | x | one pending session modification; | | x | one unknown release outcome; | | x | one residual older session record; and | | x | one session-management function replacement. | The dataset may be extended to multi-operator and roaming scenarios. 5.420. 1.C.14.3. Controlled Event Scenarios The harness should be able to inject a subscriber mapping event while leaving existing network-session state unchanged. It should separately support a scenario in which the event is followed by a successful existing session modification. It should also support one in which the modification is initiated but does not reach the expected user-plane state. These scenarios are essential for distinguishing event occurrence from session consequence. 5.421. 1.C.15. Detailed PHOSITA Implementation Procedure Phase 1 - Define the Identity Domains Create separate data types for mobile numbers, internal subscriber references, SIM profile references, device references, logical sessions, and network resources. Phase 2 - Define Source-Specific Event Types Implement distinct schemas for SIM-swap information, subscription- data updates, eSIM profile events, and device-associated changes. Phase 3 - Define Source Coverage For each event source, document its monitoring interval, generation, event identity, and completeness limitations. Phase 4 - Create Subscriber Association History Allow one mobile-line identifier to be associated with different subscriber generations across time. Das Expires 3 May 2027 [Page 200] Internet-Draft Telecom Session Operational Consistency October 2026 Phase 5 - Create Active Session Inventory Generate several PDU Session-like instances associated with different services. Phase 6 - Implement Event Qualification Parse and classify source records without collapsing semantically distinct events. Phase 7 - Implement Subscriber Mapping Resolution Use a controlled internal service to resolve event subjects to eligible subscriber contexts. Phase 8 - Implement Session-Specific Applicability Evaluate every candidate session independently against identity, time, and governingcondition constraints. Phase 9 - Implement eSIM State Variations Support installed, enabled, disabled, and deleted profile states separately. Phase 10 - Implement Multi-Profile Devices Create several subscription contexts for one simulated device. Phase 11 - Implement Subscription-Data Revisions Change a service-specific condition and evaluate which sessions are affected. Phase 12 - Implement Existing Session Procedures Simulate supported modification and release procedures. Avoid inventing a new protocol where the relevant standard already defines the transition. Phase 13 - Separate Request and Effect State Represent submitted, accepted, applied, rejected, and unknown outcomes independently. Phase 14 - Implement User-Plane Observations Das Expires 3 May 2027 [Page 201] Internet-Draft Telecom Session Operational Consistency October 2026 Provide a separate source for relevant session-resource state. Phase 15 - Implement Session-Continuity Evaluation Evaluate logical and operational continuity under explicitly stated conditions. Phase 16 - Implement Delayed Event Delivery Deliver a source event after a relevant session transition has occurred. Phase 17 - Implement Out-of-Order Event Delivery Deliver revisions in an order different from their supported source ordering. Phase 18 - Implement Duplicate Events Replay the same event and test its identity handling. Phase 19 - Implement Source Corrections Correct an earlier subscriber mapping and revise dependent assessments. Phase 20 - Implement Lost Operation Responses Apply a session operation while dropping its acknowledgement. Phase 21 - Implement Residual Session Contexts Keep an earlier session record after the associated resource was released. Phase 22 - Implement Function Replacement Replace the simulated session-management process while preserving the logical session context where supported. Phase 23 - Implement Privacy-Limited External Results Expose event applicability without leaking internal subscriber identifiers unnecessarily. Phase 24 - Evaluate Source-Scoped Negative Claims Das Expires 3 May 2027 [Page 202] Internet-Draft Telecom Session Operational Consistency October 2026 Return a negative SIM-change check for a bounded lookback period and verify that the processor does not interpret it as a lifetime guarantee. Phase 25 - Evaluate Incomplete Mapping Withhold the internal subscriber mapping and verify that the system does not invent an affected PDU Session. Phase 26 - Test Conditional Multi-Session Effects Apply one subscriber-data revision to a specific service and verify that unaffected sessions are not automatically modified. Phase 27 - Implement Reconstruction Revisions Persist evidence and reassess dependent session results following corrections. Phase 28 - Compare Two Representations Implement both relational and graph-based correspondence processing using the same synthetic dataset. Phase 29 - Measure Actual Behavior Record correct mappings, false associations, unresolved cases, reconstruction time, and resource use. Phase 30 - Document Limitations Report source coverage, mapping availability, resource-state visibility, and any unimplemented operator-specific behavior. No claim of real-world performance improvement should be made without executed validation. 5.422. 1.C.16. Failure and Adversarial Conditions 5.423. F1 - SIM-change event lacks sufficient subject information: Session mapping unresolved. F2 - API reports only a bounded negative check: No lifetime absence inferred. Das Expires 3 May 2027 [Page 203] Internet-Draft Telecom Session Operational Consistency October 2026 F3 - Latest-change timestamp is unavailable: Null interpreted under source contract. F4 - Source event arrives late: Effective event context preserved. F5 - Source delivers older revision after newer revision: No unsupported regression. F6 - Source replays one event: Duplicate handled within source semantics. F7 - Source corrects an earlier mapping: Dependent session assessments revised. F8 - Mobile number reassigned: Earlier subscriber history separated. F9 - Device identifier changes without subscription change: Device and subscriber states distinguished. F10 - Profile installed but not enabled: No automatic registration or session inference. F11 - Profile enabled but network registration fails: Session effect not fabricated. F12 - One of several profiles changes: Other profile contexts not universally changed. 5.424. F13 - One of several PDU Sessions has affected service conditions: Per-session applicability enforced. F14 - Subscription event is broader than service-specific evidence: Scope uncertainty retained. 5.425. F15 - Existing emergency session requires distinct treatment: Applicable special procedure evaluated. Das Expires 3 May 2027 [Page 204] Internet-Draft Telecom Session Operational Consistency October 2026 5.426. F16 - Session-modification request accepted but not applied: Lifecycle stages distinguished. 5.427. F17 - User-plane resource changes before control-plane record updates: State discrepancy preserved. F18 - Session-release response lost: Outcome not assumed failed. F19 - Old session record persists after release: Stale record distinguished from proven active use. F20 - New session established while old cleanup unknown: Parallel state represented without unsupported fraud inference. F21 - Function restarts and resource identifiers are reused: Generation-qualified mapping required. F22 - Operator provides abstract mapping only: Internal details not invented. F23 - Source is authenticated but stale: Current applicability checked separately. F24 - Identifier mapping conflicts between sources: Conflict preserved. F25 - Risk score is high but session state unchanged: Independent results maintained. F26 - Risk score is low but session state uncertain: Uncertainty remains. F27 - SIM event refers to a different subscription on the same device: Incorrect impact rejected. Das Expires 3 May 2027 [Page 205] Internet-Draft Telecom Session Operational Consistency October 2026 F28 - Mobile number ported between operators: Applicable subscriber and operator context reconstructed. F29 - Two session records share an identifier in different namespaces: No false identity equality. F30 - Historical session reference predates reassignment: Earlier subscriber context retained. F31 - Source monitoring coverage is incomplete: Absence-based conclusions limited. F32 - Subscriber-state event arrives during pending release: Concurrent transition evaluated. F33 - New device registration occurs while old record remains: Actual session and resource states reconciled. F34 - Reporting function fails during transition: Unknown outcomes preserved. 5.428. F35 - Source's event field semantics change after API upgrade: Schema/version interpretation reevaluated. F36 - Privacy rules prevent identity resolution: Restricted mapping not bypassed. F37 - Pseudonymous references are not linkable across authorized scopes: No guessed correlation. F38 - Subscriber association changes but no relevant session exists: Empty impact set correctly represented. Das Expires 3 May 2027 [Page 206] Internet-Draft Telecom Session Operational Consistency October 2026 F39 - A session changes resources without logical identity change: Continuity preserved where supported. F40 - A transition is technically applicable but not authorized: No automatic network operation. F41 - An existing operation completes after a later correction: Historical and current effects distinguished. 5.429. F42 - Assessment processor crashes before recording results: Reconstruction uses source-qualified history where available. 5.430. 1.C.17. Representative Proposed Verification Test Suite The following 90 tests are proposed and have not been claimed as executed. 5.431. Test ID C1- T01 C1- T02 C1- T03 C1- T04 C1- T05 5.432. Controlled scenario Valid subscriber association event External SIM-swap boolean without session ID Positive recent SIM-swap check Negative 24-hour SIM-swap check SIM change occurred before lookback window 5.433. Expected behavior Correct event classification No invented PDU Session mapping No automatic fraud conclusion Das Expires 3 May 2027 [Page 207] Internet-Draft Telecom Session Operational Consistency October 2026 Scope limited to supported window No lifetime absence claim C1- Latest-change date is null Source limitation preserved T06 C1- Source provides monitored period Correct historical coverage T07 C1- Event subject resolves to internal subscriber Supported correspondence T08 C1- T09 C1- T10 C1- T11 C1- T12 C1- T13 Event subject cannot be resolved Two subscribers used same phone number in different periods Phone number reassigned Phone number ported Device changes but subscription remains same Unresolved mapping Generation separation No historical session merging Operator and identity semantics evaluated Device/subscriber separation C1- SIM changes but device remains same Correct event distinction T14 C1- No inferred active network Profile installed but disabled T15 session C1- Profile successfully enabled Only profile state established T16 Das Expires 3 May 2027 [Page 208] Internet-Draft Telecom Session Operational Consistency October 2026 C1- T17 C1- T18 C1- T19 C1- T20 C1- T21 C1- T22 C1- T23 C1- T24 C1- T25 C1- T26 C1- T27 C1- T28 C1- T29 C1- T30 C1- T31 C1- T32 C1- T33 Profile enabled but registration fails Network result separate Profile disabled but stale session record remains Residual context qualified Profile deleted after release Lifecycle ordering interpreted Two enabled profiles on one device Per-profile correspondence One profile changes, another unaffected No blanket modification Device supports only restricted profile concurrency Applicable device semantics Subscriber has three active sessions All candidates enumerated Event affects only enterprise service Correct scoped impact Event affects all selected service classes Applicable sessions identified Event has unknown service scope Impact membership unresolved Session belongs to different subscriber generation Inapplicability established Session interval precedes event Correct temporal assessment Event effective interval overlaps session Uncertainty evaluated Event report arrives after session transition Event time distinguished Old revision arrives after new revision No false regression No duplicated transition Duplicate event delivered inference Corrected event delivered Revision handling C1- Source event reference reused after restart Generation-qualified identity T34 Das Expires 3 May 2027 [Page 209] Internet-Draft Telecom Session Operational Consistency October 2026 C1- T35 C1- T36 Subscription-data update delivered to session function Session modification initiated but pending Notification recorded separately Pending result C1- Session modification accepted T37 Acceptance not equated with application C1- User-plane modification applied Applied resource state evaluated T38 C1- T39 C1- T40 Control plane reports success, user plane unchanged User plane updated but service remains degraded Discrepancy retained Service continuity separately evaluated C1- Session modification rejected Correct rejection T41 C1- T42 C1- T43 C1- T44 C1- T45 C1- T46 C1- T47 C1- T48 C1- T49 C1- T50 Session release submitted with lost response Unknown remote outcome Release applied despite lost response State reconciliation Session logical release without full cleanup Partial terminal state Residual database record without resource No false active-use inference Residual resource without control-plane record Discrepancy identified Das Expires 3 May 2027 [Page 210] Internet-Draft Telecom Session Operational Consistency October 2026 New session appears during unresolved old cleanup Multiple states preserved Same logical session moves to new resource Session continuity assessed Instance/logical identity Session-management function replaced separated Source history incomplete after function failure Reconstruction qualified C1- T51 C1- T52 C1- T53 C1- T54 C1- T55 C1- T56 C1- T57 C1- T58 C1- T59 C1- T60 C1- T61 C1- T62 C1- T63 C1- T64 C1- T65 C1- T66 C1- T67 Subscriber event affects only one DNN Per-DNN impact Subscriber event affects selected slice condition Scoped applicability Subscriber event unrelated to one active session Inapplicability Special-service session has distinct rules Applicable exception evaluated General risk event with no network procedure No invented release requirement High fraud-risk score with healthy session Independent assessments Low fraud-risk score with unknown resource state Resource uncertainty preserved Subscriber risk data become stale Temporal applicability limited Source event lacks effective timestamp Ordering uncertainty preserved Source provides bounded timestamp uncertainty Interval reasoning Same event reported by two systems Source provenance retained Two reports share upstream event source No false independent evidence Operator event and device event disagree Semantic conflict evaluated Internal identity mapping is corrected Affected results revised Das Expires 3 May 2027 [Page 211] Internet-Draft Telecom Session Operational Consistency October 2026 Unrelated subscriber mapping corrected Unaffected sessions preserved Existing mapping record is stale Current applicability checked Mapping unavailable due to privacy restriction No unauthorized reconstruction C1- External output requires minimal disclosure Internal identifier protected T68 C1- T69 C1- T70 C1- T71 C1- T72 C1- T73 Hashed identifier remains linkable Mobile line belongs to distinct business account generation Multi-SIM service enables additional subscription association SIM-swap API treats an association change within its definition Subscription state update does not affect active resource Pseudonymization not called anonymity Historical separation Correct event semantics Contract-specific interpretation No fabricated effect C1- Operator function changes without session release Logical continuity supported T74 C1- Partial network modification Multi-dimensional state T75 C1- T76 C1- T77 C1- T78 C1- T79 C1- T80 C1- T81 C1- T82 C1- T83 C1- T84 Several unknown operation outcomes Receiver status query resolves unknown Receiver status query history expired Das Expires 3 May 2027 [Page 212] Internet-Draft Telecom Session Operational Consistency October 2026 Retry identifier has restricted scope Duplicate request payload differs Graph and relational reconstruction implementations Constraint solver admits multiple possible mappings Constraint solver times out Event-source history complete State envelope retained Correct state revision Unknown preserved Contract respected Not treated as identical retry Equivalent mandatory predicates No false uniqueness Unknown not impossible Correct reconstructed timeline C1- Event-source history has missing material event Explicit gap T85 C1- Snapshot-and-delta history has missing revision Incomplete reconstruction T86 C1- Authenticated old event replayed after newer state Staleness detected T87 C1- Hardware reports profile enabled but network Distinct state dimensions Das Expires 3 May 2027 [Page 213] Internet-Draft Telecom Session Operational Consistency October 2026 | T88 | session absent | |---|---| | C1- | Technically applicable transition without execution | | No automatic effectuation | | | T89 | authority | | C1- | Final reconstruction contains affected, unaffected, | Complete scoped result T90 and unknown sessions 5.434. 1.C.17.1. Test Evidence Requirements Each executed test should retain: 1. Event source and schema version. 2. Event identity and source generation. 3. Actual simulated subscriber association. 4. Event effective-time and delivery-time context. 5. Monitoring lookback and disclosure limits. 6. Relevant mobile-line, subscriber, device, and profile identities. 7. Mapping generations and effective intervals. 8. Applicable session inventory. 9. Session-specific service and governing conditions. 10. Candidate transition requirements. 11. Actual network-operation lifecycle. 12. Control-plane state. 13. User-plane resource state. 14. Service-level observations where required. 15. Residual earlier session contexts. 16. Expected and actual applicability classifications. 17. Unresolved evidence. 18. Reconstruction revisions. 19. Privacy-related output restrictions. 20. Processing time and resource consumption. The harness should report deterministic correctness separately from inferred risk, source completeness, and performance. A passing event-classification test is not proof of actual network- session recovery. A passing session-mapping test is not proof of successful network effectuation. A passing privacy-filter test is not proof that all associated data are legally anonymous. 5.435. 1.C.18. Standards and Established Technology Correspondence 5.436. 1.C.18.1. 3GPP Session-Management Subscription Data A PHOSITA may use 3GPP TS 23.502 as a reference for session- management subscriberdata updates and the resulting standardized session procedures. Under the applicable architecture, subscription-data changes can be notified to an SMF and may lead to an SMF-initiated PDU Session Modification or Release. Das Expires 3 May 2027 [Page 214] Internet-Draft Telecom Session Operational Consistency October 2026 These established operations are not claimed individually as new. The embodiment concerns the reconstruction of how a particular subscriber-related event corresponds to the affected active sessions and their observed resulting network states. 5.437. 1.C.18.2. Subscriber and Session Identity 5G architectures employ identifiers with defined meanings and scopes, including internal subscriber references, PDU Session identifiers, network slices, and DNNs. A PHOSITA may use the existing identity and context structures. The present embodiment does not redefine those identifiers. It emphasizes correct correspondence across their versioned mappings. 5.438. 1.C.18.3. CAMARA SIM Swap CAMARA's SIM Swap API provides application-facing information concerning recent mobile-line SIM association changes. The capabilities may include a bounded check and latest-change date retrieval. The API's supported monitoring period and privacy limitations are relevant. The API does not, by itself, furnish complete internal PDU Session state. The present embodiment may use it as one source of event information without requiring every deployment to expose operator-internal identifiers. 5.439. 1.C.18.4. SIM Swap Notifications Where a supported event-subscription API is deployed, the processor may receive SIMchange notifications. Subscription lifecycle, notification identity, delivery, and completeness limitations must be interpreted according to the applicable specification and provider implementation. The present embodiment does not invent the event-subscription mechanism. Das Expires 3 May 2027 [Page 215] Internet-Draft Telecom Session Operational Consistency October 2026 5.440. 1.C.18.5. GSMA eSIM Remote Provisioning GSMA eSIM specifications provide existing architectures for profile management. A PHOSITA may use supported profile installation, enablement, disablement, deletion, and multi-profile features where applicable. The embodiment distinguishes these profile states from actual network registration and session-resource states. 5.441. 1.C.18.6. Network Resource State A deployment may use existing network-management and session-control observations to determine whether the required network effect occurred. The information may come from session-management functions, user- plane management interfaces, or another relevant monitoring service. The actual standards and operator implementation determine what each observation establishes. 5.442. 1.C.18.7. Non-Limiting Industrial Environments The mechanism may be implemented in public mobile networks, private 5G networks, IoT connectivity services, enterprise mobile services, dual-SIM devices, eSIM-enabled devices, roaming services, and other supported telecommunications environments. The details of each deployment determine which subscriber, device, profile, and session mappings are available. 5.443. 1.C.19. Specific Claim-Supporting Relationships The following relationships may be evaluated during subsequent claim drafting. They are not assertions of established novelty. Relationship 1 - Source-semantic differentiation: Distinguishing a SIM-change information result, subscriber-data update, eSIM profile event, and device-associated change before determining session consequences. Relationship 2 - Time-qualified identity correspondence: Associating an event with the Das Expires 3 May 2027 [Page 216] Internet-Draft Telecom Session Operational Consistency October 2026 relevant subscriber generation and active-session references without assuming equality among distinct identity domains. Relationship 3 - Session-specific impact set: Determining separately which concurrent sessions are affected, unaffected, or unresolved. Relationship 4 - Multi-profile separation: Maintaining independent subscription and session relationships on a device with several profiles. Relationship 5 - Subscriber revision to session-effect reconstruction: Relating a versioned governing-condition change to the actual control-plane and resource effects of an applicable existing session procedure. Relationship 6 - Bounded source-evidence interpretation: Preventing a limited historical SIM-change check from being interpreted as complete subscriber history. 5.444. Relationship 7 - Asynchronous outcome preservation: Distinguishing notification, operation acceptance, resource application, and unresolved remote outcomes. Relationship 8 - Residual earlier session assessment: Evaluating old session records and resources following a new subscriber association without assuming that every residual record represents active service. Relationship 9 - Cross-generation continuity: Distinguishing logical session persistence from replacement of one network-function or resource instance. Relationship 10 - Retrospective assessment revision: Reevaluating affected session continuity when source mappings or events are corrected. Das Expires 3 May 2027 [Page 217] Internet-Draft Telecom Session Operational Consistency October 2026 Relationship 11 - Privacy-minimized correlation: Producing a scoped impact assessment without unnecessary disclosure of raw internal subscriber identifiers. Relationship 12 - Risk and network-state separation: Retaining a risk-information result independently of the observed technical session state. This technical profile is constrained by the source-defined operation, observation, identity, timing and state relationships. Other profiles are applicable only where their independently required interfaces and guarantees are established. The described mechanisms require operationally precise conditions, evidence sources and specific state semantics. They do not automatically imply equivalent behavior in a different deployment. 5.445. 1.C.20. Relationship to the Foundational Shared Technical Foundation This profile is a technical description of Group C operational consistency. Any independent authorization, protected execution decision, or post-effect verification is a separate requirement determined by the applicable interface and source evidence; this document alone grants no execution authority. The foundational disclosures already include telecommunications, subscriber-related governance, protected execution-finality, virtual identity, and other cross-domain mechanisms. The present embodiment shall not recharacterize an already disclosed protected authorization or execution-time capability mechanism as a newly introduced feature. Its proposed incremental technical focus is the event-to-session operational correspondence problem, especially where external SIM-related information, operator subscriber-state revisions, device-side profile changes, and actual network-session effects are not synchronously or completely visible. The specific additions potentially requiring closer examination include: Das Expires 3 May 2027 [Page 218] Internet-Draft Telecom Session Operational Consistency October 2026 (a) differentiating source-specific subscriber events before session impact determination; (b) maintaining versioned identity correspondence across mobile-line and subscriber generations; (c) identifying impacted session subsets rather than assuming subscriber- wide uniform effects; (d) distinguishing eSIM profile transitions from session-management transitions; (e) reconstructing control-plane and user-plane effects independently; (f) retaining residual earlier session contexts under uncertain cleanup; (g) preventing source monitoring limitations from becoming unsupported negative claims; (h) separating SIM-change risk information from actual network- session state; and (i) producing a versioned, evidence-qualified session impact result suitable for later reconciliation. These mechanisms must be compared with the earlier as-filed materials and relevant public prior art. This text is an illustrative technical disclosure. Separate formal disclosures and external references follow their applicable processes. 5.446. 1.C.21. Particular Technical Effects Depending upon the selected implementation, the embodiment may provide: (a) more reliable association of subscriber-related events with specific active sessions; (b) reduced incorrect correlation across reused mobile numbers; (c) improved handling of subscriber and profile generations; (d) improved distinction between device, profile, subscriber, and network-session changes; (e) reduced assumption that a recent SIM change means fraud; (f) improved interpretation of external SIM-swap information APIs; (g) better treatment of bounded monitoring windows and null results; Das Expires 3 May 2027 [Page 219] Internet-Draft Telecom Session Operational Consistency October 2026 (h) more accurate determination of which simultaneous sessions are affected; (i) improved separation of session-modification requests from applied network effects; (j) better reconstruction of residual old session contexts; (k) improved continuity across network-function replacement; (l) reduced unsupported attribution of network effects to external events; (m) improved historical reassessment after corrected subscriber mappings; (n) reduced unnecessary exposure of internal subscriber identity data; (o) compatibility with standard session-management and eSIM procedures; (p) improved technical support for later cross-operator lifecycle reconciliation; and (q) improved evidence quality for independently governed risk or network-management decisions. These are possible technical effects, not completed experimental findings. No specific reduction in fraud, unauthorized access, service interruption, incorrect session release, or processing latency is asserted without actual supporting measurements. 5.447. 1.C.22. Non-Limiting Implementation Character The present embodiment may be implemented in software, firmware, network-control functions, operator subscriber systems, eSIM management components, session-management services, device information systems, application-facing network exposure platforms, or combinations thereof. A deployment may use physical SIMs, embedded SIMs, or another applicable subscription technology. The implementation need not collect every identity field. Das Expires 3 May 2027 [Page 220] Internet-Draft Telecom Session Operational Consistency October 2026 A restricted external system may receive only a qualified impact result. A telecommunications operator may perform the complete internal session mapping. An active subscriber may have one session or several sessions. A device may support one profile or several profiles. A session may continue across network-function replacement. A subscriber-state change may affect one service without affecting another. A risk-information event may be valid without proving a network- resource transition. A profile may be enabled without a successful network registration. A released session may leave cleanup evidence outstanding. The processor may retain unresolved conditions rather than inventing a complete result. No particular vendor, mobile-network generation, database, graph engine, programming language, or AI model is mandatory. This technical profile is constrained by the source-defined operation, observation, identity, timing and state relationships. Other profiles are applicable only where their independently required interfaces and guarantees are established. The embodiment does not itself grant network effectuation authority. All consequential operations remain subject to the independently applicable standardized procedures and authorization controls. 5.448. 1.C.23. Conclusion 5.449. The central technical subject of Embodiment 1.C is the evidence- qualified reconstruction of which active telecommunications sessions, if any, are affected by a SIM-related or subscriber-association change, and what network-session lifecycle effects are actually established afterward. Das Expires 3 May 2027 [Page 221] Internet-Draft Telecom Session Operational Consistency October 2026 The embodiment distinguishes: 1. Mobile-number association from internal subscriber identity. 2. Subscriber identity from device identity. 3. SIM-related risk information from network-session state. 4. Physical or embedded SIM profile changes from network registration. 5. Profile installation from enablement. 6. Subscriber-data notification from completed session modification. 7. Logical session continuity from resource- instance continuity. 8. Control-plane operation from user-plane effect. 9. Session release from resource cleanup. 10. Current identity mapping from historical subscriber generation. 11. Source observation limits from definitive absence of an event. 12. Technical session impact from authorization to perform consequential operations. It supplies concrete algorithms, data structures, source-specific interpretations, implementation pathways, failure handling, and verification tests. Where the evidence establishes that a session is affected, the processor records the applicable state and observed consequences. Where the event is demonstrably unrelated to a session, the system does not impose a fictitious transition. Where subscriber mapping, temporal applicability, or network-resource outcomes remain unknown, the corresponding session result remains unresolved. 5.450. This completes Embodiment 1.C without repeating Common Workflow C-CW-01, generic SIM-swap fraud detection, standard 3GPP subscriber- notification procedures, or the foundational execution-finality architecture. 5.451. EMBODIMENT 2.C - INTEROPERATOR ROAMING SESSION-STATE RECONSTRUCTION, DISTRIBUTED RESPONSIBILITY CORRESPONDENCE, 5.452. AND CONTINUITY ACROSS SERVING-NETWORK TRANSITIONS 5.453. 2.C.1. Embodiment Identification Invention Group: C - Programmable Telecommunications Session Lifecycle and Cross- Operator Operational-State Consistency. Das Expires 3 May 2027 [Page 222] Internet-Draft Telecom Session Operational Consistency October 2026 Embodiment Number: 2.C - Second Embodiment of GROUP C. Technical Title: Systems and Methods for Reconstructing Session Continuity and Distributed Network-Function Responsibility Across Home-Routed, Local-Breakout, and Interoperator Mobility Transitions. Common Workflow: C-CW-01. Principal Workflow Variation: C-V2 - Interoperator Roaming Transition and Session- State Responsibility Correspondence. Embodiment Algorithm: C-ALG-03. Specific Alternative Technical Implementations: C-2-DA-01 through C-2-DA-36. Relevant Common Workflow Stages: C-CW-01.01-C-CW-01.08, C-CW- 01.09-C-CW- 01.29, and C-CW-01.32-C-CW-01.38. 5.454. Related Embodiments: | x | 1.C - SIM-related trust-state changes during active session continuity. | |---|---| | x | 3.C - Concurrent programmable session updates and usage-quota state reconciliation. | x 4.C - Service effect, network usage, and charging-record correspondence. | x | 5.C - Purpose-scoped consent-state changes during active telecommunications service. | |---|---| | x | 6.C - Partial operator failure, session release, and deferred settlement reconstruction. | 2.C.1.1. General Technical Subject The present embodiment describes a telecommunications session- lifecycle processing arrangement configured to reconstruct technical correspondence among session representations maintained by different mobile network operators and network functions during roaming, serving-area transitions, session-management function changes, user- plane resource relocation, and related mobility procedures. Das Expires 3 May 2027 [Page 223] Internet-Draft Telecom Session Operational Consistency October 2026 The arrangement considers a logical communication or connectivity session that may be associated with multiple, separately evolving control and resource contexts. In an illustrative 5G deployment, the home network and serving network may maintain different information relevant to the session. Depending upon whether the applicable architecture uses home-routed roaming, local breakout, or another supported arrangement, those networks may have different responsibilities for session management, policy, user-plane connectivity, and related resources. The device may move into a different serving network. A visited-network function may be inserted, replaced, or removed under a supported mobility procedure. A user-plane resource may be changed. A session-management request may be accepted before all resulting state changes become observable. A remote network function may be temporarily unreachable. The logical session may continue under an applicable procedure, or the network may require session release and subsequent establishment of another session. The mere persistence of a session identifier in one database does not determine which outcome occurred. The present embodiment provides a structured mechanism for establishing, to the extent supported by available evidence: 1. The logical session and its applicable generation. 2. The roaming architecture under which the session operates. 3. The relevant home and visited network responsibilities. 4. The local session references maintained by each participating function. 5. The supported correspondence among those references. 6. The governing service, access, and network-slice context. 7. The current and proposed mobility-related session transition. 8. The individual operation lifecycle and outstanding requests. 9. The user-plane resource effects associated with the transition. 10. The continuity or replacement of the logical session. 11. The actual scope of remote release and cleanup. 12. The persistence or interruption of required service properties. 13. The unresolved state when one domain cannot supply the required information. Das Expires 3 May 2027 [Page 224] Internet-Draft Telecom Session Operational Consistency October 2026 The processor does not require all participating functions to expose their internal state to one operator or central management system. It may evaluate cross-domain relationships using permitted, abstracted correspondence information. The arrangement is not restricted to one mobile network generation, although 5G system procedures provide non-limiting reference implementations. 2.C.1.2. Specific Technical Distinction The central mechanism is distributed session responsibility and state correspondence. The processor separately determines: A. Session identity correspondence: Whether different local records refer to the same applicable logical session or to distinct sessions. B. Responsibility correspondence: Which participating network functions have which session-management or resource responsibilities under the actual roaming architecture. C. Transition correspondence: Whether the observed local changes are part of a supported session-continuity procedure, a release procedure, or an unresolved transition. D. Resource correspondence: Whether the target network resources and user-plane state required by the resulting session are established. E. Service correspondence: Whether the specified service-continuity requirements are satisfied under the new context. F. Cleanup correspondence: Whether previously associated resources and contexts have been released where release is required. Das Expires 3 May 2027 [Page 225] Internet-Draft Telecom Session Operational Consistency October 2026 These relationships may have different results. For example, a home-side session may remain established while a visited-network function change is pending. Alternatively, the visited-network resource may be established while an older resource cleanup remains unresolved. The processor does not collapse such results into one unsupported ACTIVE, TRANSFERRED, or CLOSED label. 2.C.1.3. Distinction from Established Roaming Procedures Existing standards already define home-routed roaming, local breakout, mobility procedures, selection and change of session- management functions, and applicable session-management service operations. The present embodiment does not claim: | x | selecting an H-SMF or V-SMF; | |---|---| | x | implementing a conventional PDU Session Establishment procedure; | | x | implementing a conventional Nsmf_PDUSession operation; | | x | inserting or replacing a V-SMF under an existing standardized procedure; | | x | configuring N4 or N9 connectivity; | | x | applying an established roaming agreement; | | x | performing standard user-plane routing; or | | x | maintaining a conventional subscriber identity. | The proposed technical subject is the reconciliation of the multiple resulting state representations, including their partial, delayed, contradictory, or unavailable evidence. 2.C.1.4. Distinction from the Earlier Execution-Finality Portfolio The present embodiment does not newly define protected execution authority, a non-bearer capability, an Execution Handle, or a Finality Sink. Where a session operation requires authorization or protected effectuation, the existing applicable mechanisms remain separately responsible. The present embodiment determines whether a session transition remains technically consistent with its governing state and observed effects. Das Expires 3 May 2027 [Page 226] Internet-Draft Telecom Session Operational Consistency October 2026 A finding of technical compatibility does not independently authorize an operation. 5.455. 2.C.2. Particular Technical Problem Space 5.456. 2.C.2.1. Home-Routed and Local-Breakout Arrangements Have Different Responsibilities A home-routed PDU Session may involve both visited and home session- management functions and associated user-plane relationships. A local-breakout session follows a different responsibility distribution. Consequently, a procedure that assumes every roaming session possesses the same home/visited session-management topology can misidentify the function that should provide a state observation or lifecycle result. The processor must first determine the applicable session architecture. 5.457. 2.C.2.2. Session Identity and Local SM Context Identity Are Distinct An operator or network function may maintain an internal session- management context reference. Another function may maintain a related but differently identified context. The same logical PDU Session may therefore be associated with several local references. Conversely, the same numeric local identifier may occur in unrelated sessions or namespaces. The processor requires supported identity correspondence rather than equality of bare identifier strings. 5.458. 2.C.2.3. A Serving-Network Change Does Not Always Mean Session Replacement Under certain supported mobility procedures, a logical PDU Session may continue while access or serving functions change. Under other conditions, release and new establishment may be required. Das Expires 3 May 2027 [Page 227] Internet-Draft Telecom Session Operational Consistency October 2026 The processor evaluates the applicable procedure and resulting evidence. It does not automatically infer either continuity or replacement from a serving-operator change. 5.459. 2.C.2.4. A Change of V-SMF May Be Unsupported An existing home-routed session may encounter a mobility condition requiring a change of V-SMF. The relevant procedure may depend upon whether the participating network functions support the corresponding feature. Where the applicable standard requires release rather than unsupported V-SMF change, the processor must recognize that outcome. It does not invent a universally available seamless migration capability. 5.460. 2.C.2.5. A Home-Side Record May Outlast the Visited Context A home network may retain session state while a visited function is being changed or removed. The home-side record may remain correct for the logical session but not identify the current serving resource. The processor distinguishes home-side session persistence from visited-resource continuity. 5.461. 2.C.2.6. A Visited-Side Record May Remain after Home-Side Release A release procedure may be initiated by the home-side network. The visited-side context may not yet reflect completion. The processor does not interpret a home-side release acknowledgement as universal proof that all visited resources are absent. It evaluates the actual release and status semantics. 5.462. 2.C.2.7. Local Context Release May Differ from Full Session Release Some standardized mobility procedures permit releasing only a particular intermediate or visited session context. Das Expires 3 May 2027 [Page 228] Internet-Draft Telecom Session Operational Consistency October 2026 Such a release may be appropriate when the logical session is continued through another access or function. The processor must distinguish local-context release from complete PDU Session termination. A generic release string is insufficient to establish the required scope. 5.463. 2.C.2.8. Control-Plane and User-Plane State May Change at Different Times A session-management function may complete a control-plane procedure while the target user-plane resource remains pending or its operation is not yet observable. Similarly, the new user-plane path may be operational before all administrative records are updated. The processor represents these dimensions separately. 5.464. 2.C.2.9. Session-Management Function Identity Can Change without Logical Session Identity Changing A serving session-management function may be replaced. Its internal runtime and context reference may change. The relevant logical session may continue under an applicable continuity procedure. The processor maintains separate logical and function-instance identities. 5.465. 2.C.2.10. Function Replacement May Also Require Session Release A function replacement is not universally seamless. The required procedures and capabilities may determine that an existing session cannot continue. The processor cannot infer continuity merely because a replacement function is available. It must evaluate the actual procedure outcome. Das Expires 3 May 2027 [Page 229] Internet-Draft Telecom Session Operational Consistency October 2026 5.466. 2.C.2.11. Access Mobility May Change the Session's Supporting Resources A session may move between supported 3GPP and non-3GPP accesses or undergo another relevant access transition. The serving access and intermediate resources may change while the logical session follows supported mobility rules. The processor distinguishes access-specific resource release from entire session release. 5.467. 2.C.2.12. Roaming Architecture May Include Additional Local Breakout Functions Certain supported home-routed architectures may provide selected breakout behavior in a visited network. The mere presence of visited-side breakout does not make the entire session equivalent to conventional LBO. The processor uses the actual architecture and applies the correct responsibility model. 5.468. 2.C.2.13. Source and Target Functions May Temporarily Coexist During a supported mobility transition, old and new function or resource contexts may coexist for a limited period. Such coexistence is not automatically evidence of duplicate sessions. The system must determine whether the observed overlap is consistent with the applicable transition procedure. 5.469. 2.C.2.14. Coexistence May Also Conceal Incomplete Cleanup A previous resource may remain allocated after the target path becomes active. A local source may no longer need the resource, yet the cleanup operation may remain pending or unknown. The processor identifies the outstanding resource-release obligation. 5.470. 2.C.2.15. Remote State May Be Abstracted by the Other Operator The visited operator may expose only a limited status about its serving resources. Das Expires 3 May 2027 [Page 230] Internet-Draft Telecom Session Operational Consistency October 2026 The home operator may similarly expose only the session state needed at the boundary. An external reconciliation component may therefore know that an operation was accepted without knowing the full internal resource allocation. The processor must not fabricate hidden state. 5.471. 2.C.2.16. Interoperator Status Messages May Arrive Out of Order A notification describing a prior state can arrive after a newer status. Network delay, retries, buffering, and independent function processing may alter delivery order. The processor interprets source-scoped revisions and causal relationships rather than imposing arrival order as physical transition order. 5.472. 2.C.2.17. Different Operators May Have Different Clock Accuracy A home and visited operator may report timestamps generated by independently maintained clocks. A difference between those timestamps need not correspond to the actual event ordering. Where ordering matters, the processor uses supported clock uncertainty intervals, operation dependencies, or native sequence relationships. 5.473. 2.C.2.18. An Interoperator API Response May Be Lost after Remote Processing An update request may be applied by a remote function before its response is lost. The initiating function may observe a timeout. Blind retransmission may have different consequences depending upon the operation's semantics. The processor retains unknown outcome and uses supported status reconciliation where available. Das Expires 3 May 2027 [Page 231] Internet-Draft Telecom Session Operational Consistency October 2026 5.474. 2.C.2.19. A Status Notification May Not Describe All Underlying Effects A remote function may notify another component that a session context has been released. That status may have a precisely defined scope. It may not establish final user-plane cleanup, application service reachability, or charging settlement unless the relevant contract supports those conclusions. 5.475. 2.C.2.20. Different Network Functions May Maintain Different Revisions The home SMF, visited SMF, mobility manager, user-plane function, and operator inventory may use separate version identifiers. A larger number from one source does not necessarily describe a later globally applicable state. The processor preserves version namespaces. 5.476. 2.C.2.21. Some States May Be Known Only through Resource Observations A management interface may report a session update as accepted. A resource observer may independently establish the presence of the intended forwarding path. The processor may use the latter to establish particular applied- state conditions. However, resource-state equality does not necessarily prove which control message caused that state. 5.477. 2.C.2.22. Session Continuity Does Not Guarantee Service Continuity A logical session may remain established while traffic experiences disruption. A session could retain its identity but temporarily lose reachability during mobility. The system distinguishes logical persistence from a specified service-continuity objective. Das Expires 3 May 2027 [Page 232] Internet-Draft Telecom Session Operational Consistency October 2026 5.478. 2.C.2.23. Service Continuity Does Not Prove Logical Session Identity An application may continue functioning through a newly established session. Service continuity alone does not prove that the original PDU Session persisted. The processor checks the logical session's identity and applicable continuity procedure separately. 5.479. 2.C.2.24. QoS State May Differ across Operators The permitted QoS treatment or resource availability may differ across home and visited network contexts. The processor must determine the actual applicable service and operator rules. It does not assume that every prior QoS property is identically supported by a target network. 5.480. 2.C.2.25. Network Slice and DNN Correspondence May Change A session may depend upon an applicable network slice and DNN. The target roaming context may have different supported slice or service arrangements. The processor evaluates the actual mapping and supported procedure. It does not declare continuity solely from similarity of human- readable names. 5.481. 2.C.2.26. Operator Failures Can Leave a Mixed Session State One operator may be temporarily unreachable while another has already completed a local transition. The resulting state may include: | x | home session context present; | |---|---| | x | visited transition requested; | | x | target resource status unknown; | | x | source resource still present; and | | x | service condition not established. | Das Expires 3 May 2027 [Page 233] Internet-Draft Telecom Session Operational Consistency October 2026 Such a state cannot be accurately represented by one universal completion flag. 5.482. 2.C.2.27. A Retry Can Race with the Original Operation The initiating function may retry an update after a timeout. The original operation may still be processing. The processor must evaluate operation identity and the receiver's actual retry or idempotency guarantees. An identical request identifier is not automatically proof of exactly-once physical execution. 5.483. 2.C.2.28. Resource Cleanup May Depend upon a New Path Being Established During a mobility transition, premature deletion of a source resource may interrupt service. The correct sequence depends upon the supported procedure and required intermediate conditions. The processor evaluates these dependencies without inventing a new mobility protocol. 5.484. 2.C.2.29. Delayed Cleanup May Be Legitimate A source context may be retained temporarily under a supported transition or failure-recovery procedure. The processor must distinguish expected temporary coexistence from an overdue or inconsistent residual resource. A resource's presence alone does not establish a defect. 5.485. 2.C.2.30. Session Continuity and Charging Continuity Are Not Identical The logical session may continue while the applicable charging function, reporting scope, or resource attribution changes. The processor maintains the relevant session/accounting relationship without performing the full charging reconciliation of Embodiment 4.C. Das Expires 3 May 2027 [Page 234] Internet-Draft Telecom Session Operational Consistency October 2026 5.486. 2.C.2.31. Local Breakout and Home-Routed Session Charging May Follow Different Paths The relevant charging roles and traffic paths depend upon the architecture. A home-routed session is not automatically accounted for using the same operator-local records as an LBO session. The processor records which source and accounting context are applicable. 5.487. 2.C.2.32. A Remote Release May Be Necessary Even after Service Migration A subscriber may have moved to a new serving network, but an old function or user-plane resource may remain allocated. The release must be evaluated under the applicable procedure. The processor identifies the state of each required cleanup target. 5.488. 2.C.2.33. A New Registration Does Not Automatically Establish Existing Session Continuity A UE may successfully register under a target access or operator context. That does not, by itself, prove that a particular earlier PDU Session was preserved. The processor requires the relevant session-level procedure and correspondence. 5.489. 2.C.2.34. An Apparently Consistent API State Can Conceal Resource Contradiction Two interoperator status messages may agree that the transition completed. A resource-state observation may nevertheless show that an essential target resource is absent. The processor preserves the contradiction rather than discarding the resource evidence. Das Expires 3 May 2027 [Page 235] Internet-Draft Telecom Session Operational Consistency October 2026 5.490. 2.C.2.35. Reconstruction Must Respect Interoperator Information Boundaries A domain may be prohibited from disclosing internal subscriber or routing information. A verifier may receive only a permitted abstract correspondence or status. The inability to observe hidden data is a real limitation, not proof that the underlying state is absent. 5.491. 2.C.2.36. A Session-State Reconstruction Does Not Grant Authority to Modify the Network The processor may establish that a roaming transition is technically inconsistent. It may recommend an existing modification, release, or reconciliation procedure. However, the reconstruction does not independently authorize the corresponding operation. 5.492. 2.C.3. Specific Technical Contribution Sought The proposed contribution is a distributed session-state reconstruction procedure that: (a) identifies the roaming architecture applicable to a particular session; (b) reconstructs the session's logical identity within its namespace and generation; (c) identifies the home and visited operator roles relevant to that architecture; (d) associates the session with the applicable H-SMF, V-SMF, SMF, I-SMF, AMF, and userplane references only where those functions are actually involved; (e) identifies the supported correspondence among function- local session references; (f) distinguishes session identity continuity from network-function and resource continuity; (g) identifies the source and target operator or access contexts for a transition; (h) obtains the relevant mobility or session-management procedure type; (i) determines whether the required participating functions support that procedure; (j) identifies whether the procedure preserves the logical session or requires release; (k) identifies resource states and operation outcomes necessary to establish the transition; (l) distinguishes local function-context release from complete PDU Session release; (m) obtains the evidence available at each participating operator; Das Expires 3 May 2027 [Page 236] Internet-Draft Telecom Session Operational Consistency October 2026 (n) preserves information-disclosure and source-coverage limitations; (o) reconstructs outstanding requests and uncertain remote results; (p) evaluates source/target resource dependencies and transitional coexistence; (q) assesses logical, control-plane, user-plane, and service continuity separately; (r) identifies residual earlier serving-network resources; (s) evaluates applicable cleanup requirements; (t) handles delayed or corrected interoperator status information; (u) identifies which historical assessments require revision after later evidence; (v) retains accounting continuity references without treating accounting settlement as session state; (w) produces a technically qualified session-transition result; and (x) supports use of that result by independently controlled network operations and monitoring systems. The procedure may operate centrally, within one operator, across cooperating operators, or through a federated interface. It does not claim the standardized mobility procedures as new. 5.493. 2.C.4. Representative System Architecture 5.494. 2.C.4.1. Logical Session Identity Resolver The resolver identifies the subscriber and PDU Session reference under the applicable namespace and generation. It distinguishes the logical session from local SM context resources. Where the selected network technology uses another session model, the resolver applies that technology's actual semantics. 5.495. 2.C.4.2. Roaming Architecture Classifier This component determines whether the session uses: Das Expires 3 May 2027 [Page 237] Internet-Draft Telecom Session Operational Consistency October 2026 | x | home-routed roaming; | |---|---| | x | local breakout; | | x | non-roaming operation; | | x | a specifically supported home-routed breakout arrangement; | |---|---| | x | another recognized operator architecture; or | | x | an unresolved architecture. | The classifier does not assume that every network with local traffic breakout is equivalent to conventional LBO. 5.496. 2.C.4.3. Operator Responsibility Model The responsibility model associates the relevant operator and network functions with their actual roles. A non-limiting home-routed example may involve: | x | a visited-side SMF; | |---|---| | x | a home-side SMF; | | x | visited-side user-plane resources; | | x | a home-side user-plane anchor; | | x | applicable mobility-management context; and | | x | a relevant interoperator control relationship. | The model is constructed from the actual deployment. It is not a new standardized interface. 5.497. 2.C.4.4. Local Session Reference Mapper The mapper associates function-local session and context references with the logical session. It records the source, relevant generation, and validity of each association. A resource reference from one function is not automatically comparable to a similar reference from another function. 5.498. 2.C.4.5. Mobility Transition Detector The detector identifies relevant serving-network, access, or network- function changes. It obtains the underlying event type and applicable procedure reference. It does not infer that every registration or location event requires a PDU Session transition. Das Expires 3 May 2027 [Page 238] Internet-Draft Telecom Session Operational Consistency October 2026 5.499. 2.C.4.6. Procedure Capability Evaluator The evaluator determines whether the participating functions support the required mobility or session-management operation. Where the applicable standard requires release because a continuity operation is unsupported, that requirement is retained. 5.500. 2.C.4.7. Interoperator Evidence Collector The collector obtains permitted status and correspondence information from participating operators. It may receive only abstract boundary-level data. The collector records the completeness and visibility limitations. 5.501. 2.C.4.8. Source-State Reconstruction Component This component reconstructs the relevant session and resource state before the transition. It may use local SMF records, operator context, resource observations, or qualified historical state. 5.502. 2.C.4.9. Target-State Reconstruction Component The target-state component evaluates the session and resource conditions that are established after or during the transition. It does not equate target registration with successful preservation of every previous session. 5.503. 2.C.4.10. Control-Plane Operation Tracker The tracker interprets session-management requests, responses, status notifications, and unknown outcomes under applicable interface semantics. 5.504. 2.C.4.11. User-Plane Path Correspondence Evaluator The evaluator associates the logical session with relevant source, intermediate, and target user-plane resources. It distinguishes intended paths from observed applied state. Das Expires 3 May 2027 [Page 239] Internet-Draft Telecom Session Operational Consistency October 2026 5.505. 2.C.4.12. Service Continuity Observer Where the recovery or transition objective requires service continuity, this component obtains relevant reachability, QoS, or other operational observations. It does not infer full service continuity merely from continued logical session identity. 5.506. 2.C.4.13. Cleanup and Residual-State Evaluator The evaluator identifies which earlier contexts and resources must be released under the applicable procedure. It distinguishes local release from remote cleanup and from full session termination. 5.507. 2.C.4.14. Cross-Operator Revision Repository This repository maintains source-scoped versions, relevant event order relationships, and state observations. It does not impose one arbitrary global version number upon independent operators. 5.508. 2.C.4.15. Uncertainty and Contradiction Evaluator The evaluator identifies missing mandatory data and contradictions between source claims and observed state. It distinguishes an unknown state from a demonstrated inconsistent state. 5.509. 2.C.4.16. Transition Result Generator The generator produces a result identifying: | x | logical continuity; | |---|---| | x | responsibility correspondence; | | x | control-plane outcome; | | x | user-plane state; | | x | service continuity; | | x | release scope; | | x | cleanup state; | | x | unresolved conditions; and | | x | supporting evidence. | 5.510. 2.C.4.17. Optional Existing Effectuation Interface Where further session modification or release is required, the technical result may be supplied to a separately authorized network procedure. Das Expires 3 May 2027 [Page 240] Internet-Draft Telecom Session Operational Consistency October 2026 This interface is not a newly invented execution-finality mechanism. 5.511. 2.C.5. Necessary Embodiment-Specific Interpretations The Group C common definitions remain applicable. The following local descriptions address the distinctive technical relationships of Embodiment 2.C. 5.512. 2.C.5.1. Interoperator Session Correspondence The established relationship between the logical session and the session or resource references exposed by two or more operator contexts. The relationship may be complete, partial, or unresolved. 5.513. 2.C.5.2. Responsibility Correspondence The association of session-management, resource, and lifecycle responsibilities with the participating network functions under the actual roaming architecture. 5.514. 2.C.5.3. Serving-Context Transition A mobility-related change in the operator, access, network function, or resource context serving the session. The transition does not, by definition, imply logical session replacement. 5.515. 2.C.5.4. Source Context The operator, function, or resource state relevant to the session before a selected transition. 5.516. 2.C.5.5. Target Context The operator, function, or resource state relevant to the session after or during the selected transition. 5.517. 2.C.5.6. Local-Context Release Release of a specific function-local session context under an applicable procedure. It is distinguished from complete logical PDU Session release where the protocol makes that distinction. Das Expires 3 May 2027 [Page 241] Internet-Draft Telecom Session Operational Consistency October 2026 5.518. 2.C.5.7. Session Continuity Assessment The evidence-qualified determination of whether a particular logical session persisted under its applicable mobility and session- management semantics. The assessment does not automatically establish uninterrupted end-to- end service. 5.519. 2.C.5.8. Residual Serving Context An earlier network-function or user-plane resource context whose continued existence or cleanup status remains relevant after a serving-context transition. 5.520. 2.C.6. Representative Data Structures 5.521. 2.C.6.1. Roaming Session Record RoamingSession: logical\_session\_id subscriber\_reference session\_namespace session\_generation roaming\_architecture home\_operator\_reference visited\_operator\_reference serving\_access\_reference pdu\_session\_reference dnn\_reference slice\_or\_service\_context applicable\_home\_sm\_reference applicable\_visited\_sm\_reference applicable\_intermediate\_sm\_reference current\_resource\_correspondences current\_lifecycle\_state unresolved\_conditions Fields are populated only where relevant to the actual architecture. 5.522. 2.C.6.2. Operator Responsibility Record OperatorResponsibility: responsibility\_id logical\_session\_reference operator\_namespace operator\_role network\_function\_role network\_function\_instance function\_generation session\_reference responsibility\_type applicable\_procedure state\_source effective\_interval\_or\_generation exposed\_status visibility\_limitations Das Expires 3 May 2027 [Page 242] Internet-Draft Telecom Session Operational Consistency October 2026 5.523. 2.C.6.3. Cross-Operator Correspondence Record CrossOperatorCorrespondence: correspondence\_id home\_session\_reference visited\_session\_reference logical\_session\_reference relationship\_type applicable\_roaming\_model subscriber\_mapping\_evidence source\_and\_target\_generations established\_state\_dependencies supporting\_boundary\_records correspondence\_verdict unresolved\_conditions 5.524. 2.C.6.4. Mobility Transition Record MobilityTransition: transition\_id logical\_session\_reference source\_operator\_context target\_operator\_context source\_access\_context target\_access\_context source\_sm\_function target\_sm\_function mobility\_trigger procedure\_reference capability\_requirements intended\_logical\_session\_effect intended\_resource\_effects required\_cleanup\_effects operation\_references transition\_status 5.525. 2.C.6.5. Interoperator Operation Evidence InteroperatorOperationEvidence: evidence\_id source\_operator source\_function\_generation receiving\_operator\_or\_function operation\_type request\_reference original\_operation\_parameters transport\_status receiver\_acceptance\_status remote\_processing\_status response\_or\_notification\_reference event\_time\_context source\_revision outcome\_scope reporting\_limitations 5.526. 2.C.6.6. User-Plane Resource Correspondence UserPlaneCorrespondence: logical\_session\_reference source\_up\_resource\_ids target\_up\_resource\_ids source\_up\_function\_generations target\_up\_function\_generations applicable\_interface\_relationships intended\_path\_state observed\_path\_state resource\_activation\_status source\_resource\_release\_status target\_resource\_release\_status service\_observation\_references unresolved\_conditions Das Expires 3 May 2027 [Page 243] Internet-Draft Telecom Session Operational Consistency October 2026 5.527. 2.C.6.7. Transition State Reconstruction TransitionStateReconstruction: reconstruction\_id logical\_session\_reference architecture\_reference source\_state\_reference target\_state\_reference established\_logical\_state established\_control\_state established\_user\_plane\_state established\_service\_state potentially\_effective\_operations unresolved\_remote\_states known\_residual\_resources mandatory\_transition\_conditions consistency\_verdict reconstruction\_revision 5.528. 2.C.6.8. Final Interoperator Continuity Result InteroperatorContinuityResult: incident\_or\_mobility\_event\_reference logical\_session\_reference source\_and\_target\_contexts architecture\_classification operator\_responsibility\_assessment session\_identity\_continuity control\_plane\_transition\_assessment user\_plane\_transition\_assessment service\_continuity\_assessment local\_context\_release\_status global\_session\_release\_status outstanding\_cleanup\_requirements unresolved\_conditions evidence\_references result\_revision 5.529. 2.C.7. Detailed Operational Procedure The following 42 stages elaborate C-CW-01 for interoperator roaming and distributed session responsibility. 5.530. 2.C-01 - Receive a Roaming or Serving-Context Transition Event The processor receives a relevant mobility, serving-network, access, session-management, or reconciliation event. It identifies the source and event type. Output: Candidate transition event. 5.531. 2.C-02 - Resolve the Logical Session The processor identifies the applicable subscriber, session namespace, PDU Session reference, and generation. Where insufficient information is available, the mapping remains unresolved. Das Expires 3 May 2027 [Page 244] Internet-Draft Telecom Session Operational Consistency October 2026 Output: Qualified logical session identity. 5.532. 2.C-03 - Determine the Roaming Architecture The processor identifies the applicable home-routed, local-breakout, or other supported arrangement. Architecture-specific responsibilities are not inferred from the fact of roaming alone. Output: Architecture classification. 5.533. 2.C-04 - Identify the Home Operator Context The system obtains the relevant home network role and exposed session information. It records the source and scope of the information. Output: Home context. 5.534. 2.C-05 - Identify the Serving or Visited Operator Context The processor determines the relevant serving network and visited- side functions. It distinguishes current and historical contexts. Output: Visited context. 5.535. 2.C-06 - Resolve the Applicable Session-Management Functions The processor identifies which SMF, V-SMF, H-SMF, I-SMF, or other function roles are actually involved. It does not populate non-applicable roles merely to complete a fixed schema. Output: Function responsibility set. 5.536. 2.C-07 - Resolve Function-Local Session References Each local session or SM context reference is associated with its source and function generation. The processor evaluates supported correspondence to the logical session. Das Expires 3 May 2027 [Page 245] Internet-Draft Telecom Session Operational Consistency October 2026 Output: Function-local reference mapping. 5.537. 2.C-08 - Establish Pre-Transition Resource State The processor obtains source-context resources and observed operational state. It records which user-plane and access relationships are relevant. Output: Source state reconstruction. 5.538. 2.C-09 - Establish Governing Service Conditions The processor identifies applicable DNN, slice, QoS, subscriber, and other necessary conditions. Their semantics are obtained from the actual deployment. Output: Governing-state reference. 5.539. 2.C-10 - Identify the Mobility Trigger and Procedure The system determines the applicable mobility or serving-function transition procedure. It distinguishes interoperator movement, serving-area change, access change, and function replacement. Output: Procedure context. 5.540. 2.C-11 - Evaluate Procedure Capability Support The processor checks whether the participating network functions support the required continuity procedure. If the applicable standard requires release under unsupported capabilities, that outcome is retained. Output: Capability assessment. 5.541. 2.C-12 - Determine the Intended Logical Session Effect The system determines whether the procedure is intended to preserve the logical session, replace it, or release it. The intended effect is recorded separately from the observed result. Output: Logical transition requirement. Das Expires 3 May 2027 [Page 246] Internet-Draft Telecom Session Operational Consistency October 2026 5.542. 2.C-13 - Determine Required Source and Target Functions The processor identifies which functions must participate in the transition. It distinguishes mandatory and optional participants under the procedure. Output: Participant dependency set. 5.543. 2.C-14 - Determine Required Target Resources The processor identifies the user-plane, access, and related resources required for the target context. Output: Target resource requirements. 5.544. 2.C-15 - Determine Source Resource Retention Requirements The system identifies source resources that must remain available during the transition. It applies the actual procedure and service continuity conditions. Output: Source retention requirements. 5.545. 2.C-16 - Determine Cleanup Requirements The processor identifies which prior contexts and resources require release after the transition. It distinguishes local-context release from complete session release. Output: Cleanup obligations. 5.546. 2.C-17 - Identify Outstanding Transition Operations The system retrieves pending or unresolved create, update, release, status, or context-transfer operations. Output: Outstanding operation set. 5.547. 2.C-18 - Evaluate Source and Target State Compatibility The processor checks whether the proposed transition is technically compatible with the established source and target states. Output: Initial transition feasibility. Das Expires 3 May 2027 [Page 247] Internet-Draft Telecom Session Operational Consistency October 2026 5.548. 2.C-19 - Evaluate Cross-Operator Mapping The processor determines whether the home and visited local references describe the same applicable logical session. A shared subscriber does not automatically establish one-to-one session identity. Output: Cross-operator identity verdict. 5.549. 2.C-20 - Evaluate Source-Specific Versions and Event Ordering The processor reconciles relevant revisions, effective intervals, and source-generation references. It does not impose a numerical order across unrelated operator namespaces. Output: Qualified transition chronology. 5.550. 2.C-21 - Evaluate Resource-Continuity Dependencies The processor determines whether the target path or resource must be established before particular source resources can be released. Output: Resource dependency assessment. 5.551. 2.C-22 - Evaluate Service-Continuity Requirements The system identifies whether the procedure requires logical persistence alone or also specified service continuity. It determines which observations will be needed. Output: Service continuity objective. 5.552. 2.C-23 - Construct Transition-State Possibilities Where operations are pending or source evidence is incomplete, the processor represents possible source and target states. Output: Transition state set. 5.553. 2.C-24 - Determine Technical Transition Applicability The processor combines architecture, identity, procedure, capability, state, and dependency requirements. Das Expires 3 May 2027 [Page 248] Internet-Draft Telecom Session Operational Consistency October 2026 It classifies the transition as compatible, incompatible, or unresolved. Output: Technical applicability verdict. 5.554. 2.C-25 - Associate Required Network Operations with Existing Controls Where a separately performed operation is required, the system provides the supported operation specification to the applicable network procedure and authorization path. No execution authority is created by this assessment. Output: Qualified operation specification. 5.555. 2.C-26 - Observe Local Operation Submission The processor records the relevant submitted operation and target function. It does not infer remote completion from local transmission. Output: Submission record. 5.556. 2.C-27 - Interpret Receiver Acknowledgement The processor interprets received acknowledgements under the relevant service operation and its documented semantics. Output: Acceptance or rejection status. 5.557. 2.C-28 - Reconcile Remote Unknown Outcomes Where a response is lost or incomplete, the processor obtains supported remote status or resource observations when possible. Output: Remote outcome assessment. 5.558. 2.C-29 - Observe Home-Side Session State The processor obtains the relevant H-SMF or other home-side state where applicable. Output: Home-side lifecycle evidence. Das Expires 3 May 2027 [Page 249] Internet-Draft Telecom Session Operational Consistency October 2026 5.559. 2.C-30 - Observe Visited-Side Session State The processor obtains the relevant visited-side function state under the applicable architecture. Output: Visited-side lifecycle evidence. 5.560. 2.C-31 - Observe Target User-Plane State The processor evaluates whether the required target resources are established under available source information. Output: Target resource assessment. 5.561. 2.C-32 - Observe Source User-Plane State The processor determines whether source resources remain present, were released, or cannot be conclusively observed. Output: Source resource assessment. 5.562. 2.C-33 - Evaluate Logical Session Continuity The system determines whether the applicable session identity is established as continuing. A new function instance does not automatically negate continuity. Output: Logical continuity verdict. 5.563. 2.C-34 - Evaluate Service Continuity Separately Where required, the processor evaluates relevant service and traffic observations. A persistent logical session does not automatically prove uninterrupted service. Output: Service continuity verdict. 5.564. 2.C-35 - Reconcile Local-Context Release The processor evaluates whether local or intermediate function contexts were released according to the applicable procedure. Output: Local-context cleanup verdict. Das Expires 3 May 2027 [Page 250] Internet-Draft Telecom Session Operational Consistency October 2026 5.565. 2.C-36 - Reconcile Full Session Release Where Applicable The processor separately determines whether the complete logical session was released. A local-context release is not automatically classified as full termination. Output: Logical release assessment. 5.566. 2.C-37 - Identify Residual Earlier Resources The system identifies source resources whose retention is unexplained, required, or not yet resolved. It distinguishes expected temporary coexistence from established cleanup failure. Output: Residual resource set. 5.567. 2.C-38 - Reconcile Accounting Continuity References The processor associates earlier and later resource or operator contexts with the applicable accounting references where relevant. It does not perform full settlement reconciliation in this embodiment. Output: Accounting correspondence reference. 5.568. 2.C-39 - Identify Contradictory or Missing Evidence The processor identifies conflicts between operator claims and resource observations, including source limitations. Output: Evidence discrepancy report. 5.569. 2.C-40 - Revise the Assessment after Material Updates The processor reevaluates affected relationships when delayed status, corrected identity mapping, or newly observed resource state becomes available. Output: Revised state assessment. Das Expires 3 May 2027 [Page 251] Internet-Draft Telecom Session Operational Consistency October 2026 5.570. 2.C-41 - Preserve the Transition Reconstruction History The system retains the relevant logical session, function references, procedure, evidence, revisions, outstanding operations, and state conclusions. Output: Reconstructible transition history. 5.571. 2.C-42 - Produce the Interoperator Session Continuity Result The processor reports the established and unresolved state dimensions for the completed or pending transition. It identifies the scope of the conclusion. Output: C-V2 interoperator continuity reconstruction. 5.572. 2.C.8. Technical Invariants 5.573. C2-I01 - Roaming does not universally imply one specific session-management architecture. 5.574. C2-I02 - Home-routed and local-breakout session responsibilities must not be conflated. C2-I03 - Home-routed session breakout features are not automatically equivalent to conventional local breakout. 5.575. C2-I04 - The presence of a V-SMF depends upon the applicable architecture and procedure. C2-I05 - A logical session identifier is not identical to a function- local SM context reference. C2-I06 - Session identity comparisons must respect namespaces and generations. 5.576. C2-I07 - A serving-network change does not automatically prove logical session replacement. C2-I08 - A serving-network change does not automatically guarantee logical session continuity. C2-I09 - Unsupported V-SMF change cannot be presumed seamless. C2-I10 - A new registration does not automatically prove that an earlier PDU Session was preserved. Das Expires 3 May 2027 [Page 252] Internet-Draft Telecom Session Operational Consistency October 2026 C2-I11 - Network-function instance replacement does not necessarily require a new logical session. 5.577. C2-I12 - Network-function replacement does not universally guarantee session preservation. C2-I13 - Local-context release is distinct from complete PDU Session release where the protocol distinguishes them. 5.578. C2-I14 - A home-side status does not automatically establish every visited-side resource state. C2-I15 - A visited-side acknowledgement does not automatically establish home-side completion. C2-I16 - Control-plane completion is not necessarily user-plane application. C2-I17 - A target resource's presence does not automatically prove service continuity. C2-I18 - Logical session persistence does not automatically establish uninterrupted traffic. C2-I19 - Service continuity does not by itself establish original logical session identity. 5.579. C2-I20 - Resource replacement does not automatically constitute a new billable session. C2-I21 - A source resource's temporary presence is not automatically a cleanup defect. C2-I22 - A source resource's unexpected persistence may remain unresolved without suitable procedure and state evidence. C2-I23 - A local release command does not prove global cleanup. C2-I24 - A lost interoperator response does not establish remote nonapplication. C2-I25 - Request identity alone does not create a global exactly-once guarantee. Das Expires 3 May 2027 [Page 253] Internet-Draft Telecom Session Operational Consistency October 2026 5.580. C2-I26 - Source-specific revision numbers are not globally comparable without adequate mapping. C2-I27 - Arrival order does not automatically establish physical event order. C2-I28 - Source timestamp order requires applicable clock and event semantics. C2-I29 - A function's authenticated status may be incomplete or stale. C2-I30 - A status notification must be interpreted under its declared scope. C2-I31 - A source may expose abstract interoperator state without exposing internal resources. 5.581. C2-I32 - Hidden state shall not be invented merely to complete a uniform session record. 5.582. C2-I33 - An unknown mandatory state condition cannot be silently treated as compatible. C2-I34 - A demonstrated mandatory conflict is not merely unresolved. 5.583. C2-I35 - Multiple possible resulting states may remain after incomplete remote operations. C2-I36 - Pairwise resource compatibility does not always establish complete transition compatibility. C2-I37 - Target-state configuration equality does not automatically establish harmless transitional behavior. 5.584. C2-I38 - Existing standardized mobility procedures are not newly invented by the reconstruction. C2-I39 - A continuity conclusion must identify its applicable state and interval. C2-I40 - A historical continuity result need not remain currently applicable after material changes. C2-I41 - Accounting continuity is distinct from logical session continuity. Das Expires 3 May 2027 [Page 254] Internet-Draft Telecom Session Operational Consistency October 2026 5.585. C2-I42 - Operator-local accounting completion does not necessarily establish interoperator settlement. C2-I43 - Confidential interoperator mappings remain subject to applicable access and disclosure controls. C2-I44 - A complete local record need not be a complete cross-domain record. C2-I45 - A state reconstruction does not automatically confer authority to modify or release a session. 5.586. C2-I46 - An authorized operation may become technically inapplicable following a state change. C2-I47 - A solver timeout does not establish that no consistent transition exists. C2-I48 - A claim of successful continuity cannot exceed the actual source, operator, protocol, and observation guarantees. 5.587. 2.C.9. Embodiment-Specific Mathematical Formulation The following expressions supplement the Group C common workflow mathematics. They are illustrative and must be interpreted according to the specific deployment and protocol assumptions. 5.588. 2.C.9.1. Logical Session and Operator Contexts Let: [ s ] identify one logical session. Let: [ O={o\_1,o\_2,\\ldots,o\_n} ] identify participating operator contexts. For each operator (o), let: [ K\_o(s,t) ] Das Expires 3 May 2027 [Page 255] Internet-Draft Telecom Session Operational Consistency October 2026 represent the relevant function-local session state associated with (s). The states need not have identical schemas, versions, or update times. 5.589. 2.C.9.2. Architecture-Dependent Responsibility Let: [ A\_s\\in {\\mathrm{HR},\\mathrm{LBO},\\mathrm{Other},\\mathrm{Unknown}} ] represent the applicable session architecture. Define: [ D(A\_s,s) ] as the responsibility relation identifying applicable network functions and required lifecycle roles. The set is dependent upon the architecture and session procedure. A universal fixed set of H-SMF, V-SMF, and user-plane functions is not assumed. 5.590. 2.C.9.3. Interoperator Identity Correspondence Define: [ I(s,k\_h,k\_v)\\in{T,F,U} ] to indicate whether home-side reference (k\_h) and visited-side reference (k\_v) correspond to logical session (s). The predicate is based upon supported session identity, context mapping, and generation information. Bare numerical equality of (k\_h) and (k\_v) is insufficient. 5.591. 2.C.9.4. Transition State Vector Let: [ X\_s= (L,H,V,R\_h,R\_v,Q,Z) ] where: Das Expires 3 May 2027 [Page 256] Internet-Draft Telecom Session Operational Consistency October 2026 | x | (L): logical session state; | |---|---| | x | (H): home-side session-management state; | | x | (V): visited-side session- management state; | | x | (R_h): relevant home-side resource state; | | x | (R_v): relevant visited-side resource state; | | x | (Q): required service quality or continuity evidence; | | x | (Z): uncertainty and outstanding operations. | The vector may be adapted for architectures lacking some of these dimensions. 5.592. 2.C.9.5. Procedure Applicability For transition (a), define: \\bigwedge\_{p\\in P(a,A\_s)}p(X\_s), ] where (P(a,A\_s)) contains the mandatory conditions under the applicable architecture. The predicates are three-valued. A mandatory false condition establishes incompatibility. A mandatory unresolved condition prevents unconditional compatibility unless a separate mandatory condition is already false. 5.593. 2.C.9.6. Capability-Dependent Transition Let: [ C\_{\\mathrm{change}} ] represent supported capability for a particular session-management- function change. A continuity candidate requiring that feature cannot be treated as universally applicable when the capability is absent. The resulting procedure may instead require an established release path. 5.594. 2.C.9.7. Resource Transition Sequence Let (R\_0) be the source resource state. Let (f\_a) represent target resource establishment, and (f\_b) represent source resource release. Das Expires 3 May 2027 [Page 257] Internet-Draft Telecom Session Operational Consistency October 2026 A selected continuity requirement may distinguish: [ f\_b(f\_a(R\_0)) ] from: [ f\_a(f\_b(R\_0)). ] Even if both reach a similar final resource allocation, the intermediate service conditions may differ. The actual permitted order is determined by the relevant standardized procedure. 5.595. 2.C.9.8. Unknown Remote Outcome Suppose operation (a) was submitted but its outcome is unknown. The processor may retain: {X\_{\\mathrm{applied}}, X\_{\\mathrm{not\\ applied}}, X\_{\\mathrm{partial}}, \\ldots} ] subject to the available source evidence. It does not select one state merely because that state was intended. 5.596. 2.C.9.9. Session Continuity Predicate Define: I\_{\\mathrm{identity}} \\land I\_{\\mathrm{procedure}} \\land I\_{\\mathrm{lifecycle}}, ] where the terms describe the applicable identity, procedure, and logical-state requirements. The full predicate depends upon the chosen network architecture. 5.597. 2.C.9.10. Service Continuity Predicate Let: \\bigwedge\_{q\\in Q\_s}q(X\_s) ] where (Q\_s) contains the selected service conditions. Das Expires 3 May 2027 [Page 258] Internet-Draft Telecom Session Operational Consistency October 2026 Logical session continuity and service continuity are separately evaluated. 5.598. 2.C.9.11. Cleanup Predicate Let: [ R\_{\\mathrm{required}} ] be the set of resources requiring release under the applicable procedure. Then: \\bigwedge\_{r\\in R\_{\\mathrm{required}}} \\operatorname{Released}(r). ] An unknown resource release status yields an unresolved cleanup result unless another mandatory cleanup condition is already demonstrably violated. 5.599. 2.C.9.12. Source-Qualified State Versions Let: [ v\_h ] be a home-side revision and: [ v\_v ] a visited-side revision. The numerical relationship: [ v\_h