| AAC-CH-00 · No material change introduced |
Baseline |
Evaluate the assembled claim against the fixed synthetic evidence without adding a new defeater. |
No change event |
Continuous Assurance ↗ |
| AAC-CH-01 · Shared upstream dependency discovered |
Evidence |
Records previously treated as independent corroboration are shown to descend from one observation service. |
AAC-CL-01, AAC-CL-04, AAC-CL-08 |
Federated Trust ↗ |
| AAC-CH-02 · Model or calibration version changed without revalidation |
Model |
A new model or calibration artifact enters service while the prior assurance case still names the earlier version. |
AAC-CL-02, AAC-CL-04, AAC-CL-06, AAC-CL-07 |
Change Impact ↗ |
| AAC-CH-03 · Response threshold or configuration changed outside review |
Software Configuration |
A material threshold or runtime configuration changes what can satisfy the authority gate without updating the accepted claim basis. |
AAC-CL-03, AAC-CL-06, AAC-CL-07 |
Change Impact ↗ |
| AAC-CH-04 · Interface revision hides contrary evidence until after commitment |
Interface |
The compact supervisory view removes contradictions and alternatives from the pre-commit display, while the detailed view finishes after irreversibility. |
AAC-CL-04, AAC-CL-07, AAC-CL-08 |
Meaningful Human Judgment ↗ |
| AAC-CH-05 · Operating environment moves outside the validated envelope |
Operating Environment |
Sensor geometry, latency, weather, object behavior, or interaction conditions differ materially from the recorded validation state. |
AAC-CL-02, AAC-CL-05, AAC-CL-07 |
Uncertainty Architecture ↗ |
| AAC-CH-06 · Provenance signature or custody chain cannot be verified |
Evidence Integrity |
One or more records cannot be tied reliably to their source, transformation, version, or collection time. |
AAC-CL-01, AAC-CL-07, AAC-CL-08 |
Decision Provenance ↗ |
| AAC-CH-07 · Safe-state path shares the failed dependency |
Dependency |
The supposed independent hold or alternate review path relies on the same service, identity, or transport that already failed. |
AAC-CL-05, AAC-CL-07 |
Resilience ↗ |
| AAC-CH-08 · Assurance invalidation monitor disabled during a material change |
Assurance Governance |
The mechanism expected to suspend stale claims is unavailable while the system changes. |
AAC-CL-07, AAC-CL-02, AAC-CL-06 |
Continuous Assurance ↗ |
| AAC-CH-09 · Correction and retirement owner removed or lacks authority |
Institutional Authority |
The named role can document a problem but cannot suspend operation, correct the record, or retire the affected claim or configuration. |
AAC-CL-08, AAC-CL-07 |
Evulgare Accountability ↗ |
| AAC-CH-10 · Independent revalidation completed for the changed state |
Revalidation |
The changed model, software, configuration, policy, interface, dependencies, and operating conditions are reviewed against current evidence and scope. |
AAC-CL-01, AAC-CL-02, AAC-CL-03, AAC-CL-04, AAC-CL-05, AAC-CL-06, AAC-CL-07, AAC-CL-08 |
Continuous Assurance ↗ |