Allow earlier procurement corrections after final-step errors
A final-step error blocks users from returning to fix amounts. Separate navigation from submission validity.
- Focused work estimate
- 2h + prerequisites
- Priority in the scenario
- Medium
- Engineering practice
- State machines · Validation
Estimated field mix
- Frontend100%
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
Fictional procurement team Northroom collects purchase requests in a browser form. Work uses local stubs and cannot place purchases.
Setup prerequisites
- Create synthetic categories and conditional request fields.
- Stub draft revisions and submission outcomes.
Preceding work
Complete these dependencies, or supply their agreed outputs before taking this ticket.
Acceptance criteria
- Back stays available
- Forward validates applicable step
- Submit validates full active payload
Implementation constraints
- Share one validation contract.
Verification to include
- Correct earlier amount
- Fail final validation and go Back
Deliverables
- Step validation coordinator
Rollout and recovery
Fall back to a single-page form.
Value of the work
For the engineer: Practice state boundaries and form schema transitions.
For the team: Inspect how hidden obsolete data and duplicate requests are prevented.
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.