Rental-operations-platform/docs/phase15/IDEMPOTENCY_DUPLICATE_REPORT_v1.0.md

Phase 15 Idempotency and Duplicate Report

Date: 2026-06-25
Status: Local static design reviewed; production gate blocked

Summary

The current process-local store coalesces repeated keys, caches non-retryable results, removes retryable failures, and contains no personal data in keys. It is explicitly test/local only.

Executed evidence

• Historical Phase 14 integration test covered repeated transport.
• Source review confirms retryable failures release the key.

Unexecuted or blocked evidence

• Current integration/browser retry execution.
• Distributed durable store, late vendor success, cross-instance duplicate policy, legitimate later request policy.

Release disposition

P14-004 blocks scaled production.