Explain a denied upload using the exact entitlement revision
An upload rejection says only limit exceeded, so support cannot connect it to the plan and restriction that were evaluated.
- Focused work estimate
- 3h + prerequisites
- Priority in the scenario
- Medium
- Engineering practice
- Provenance · Tenant isolation
Estimated field mix
- Backend70%
- API design30%
Field percentages are editorial estimates of the ticket's engineering focus. They total 100%; they are not measured time, proficiency scores, or ownership evidence.
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Project context
A fictional document service grants storage and collaboration rights from subscriptions. Support cannot explain why delayed events restore old limits.
Setup prerequisites
- Create a local subscription API with synthetic accounts.
- Understand transactions and UTC intervals.
Preceding work
Complete these dependencies, or supply their agreed outputs before taking this ticket.
- ADRIFT-101 · Specify the entitlement response at an exact effective instant
- ADRIFT-103 · Reject negative and fractional seat allowances consistently
- ADRIFT-104 · Apply a scheduled downgrade only after its stored effective time
- ADRIFT-105 · Prevent a late upgrade event from undoing a newer cancellation
- ADRIFT-102 · Keep manual account restrictions separate from plan allowances
- ADRIFT-106 · Make plan switching and seat allocation share one consistency boundary
Acceptance criteria
- Return a stable denial code and evaluated revision ID.
- Include byte limit and current usage without other accounts' data.
- Keep historical revisions immutable for later explanation.
Implementation constraints
- Avoid storing document contents in decision logs.
Verification to include
- Reproduce a denial and resolve the same historical decision after upgrade.
- Request another account's decision ID and return a nondisclosing denial.
Deliverables
- Decision projection and scoped history route
Rollout and recovery
Enable explanation reads first; disable projection if privacy checks fail.
Value of the work
For the engineer: Practice temporal rules, concurrency and explainable API decisions.
For the team: Review whether entitlement changes preserve customer access and produce supportable decisions.
Evidence boundaries
Outcome Evidence: Tests, patches, and runbooks are requested deliverables. They become Outcome Evidence only through a qualified Mission and immutable Evidence IDs.
Ownership Evidence: Independent adaptation must be observed under a declared verification policy and cite immutable Evidence IDs. Completing a planning ticket establishes no Ownership Evidence.