Rule of Recovery
Safeguards match consequences and preserve work.
Requirement
Match prevention and recovery to the action's consequences. Reversible low-risk operations should be easy to undo; consequential submissions need an appropriate reversal, checking, or review mechanism. On failure, preserve recoverable input and identify the problem and corrective action.
Why
Re-entering valid work does not correct the original error. The applicable scope and alternatives of WCAG 3.3.4 are specific; it does not require confirmation dialogs for every save. WCAG 3.3.1 requires textual identification of automatically detected input errors.
Application
Preserve the entered proposal after server rejection, associate persistent correction guidance with the field, and show affected records before a bulk publication. Undo must reverse the actual operation, not merely dismiss a toast.
Exception
Security-sensitive values or expired authorization may require re-entry. Explain the reason and retain other safe work. An irreversible action cannot truthfully offer Undo; show its consequences before commitment instead.
Review
Exercise rejection, correction, retry, cancellation, and actual reversal where supported. A review dialog or Undo label alone does not establish protection.
Examples
The pair isolates this rule. A good example is not approval of the entire interface.
DR-009 · Illustrative comparison—not an engine verdict.
Good for this task
Bad for this task
Review notes and sources
What this example establishes
Other valid choices
Exception
Sources and scope
Shipments
12
Data as of 09:00
Refresh failed at 09:05
Selected shipment: EP 1042
EP 1042 · Oakland → Seattle
EP 1043 · Oakland → Denver
Rate proposal
12 selected lanes · USD rates · effective September 15, 2026.
No changes published.
Dispatch review
Today · All carriers and origins · 09:00 PT snapshot
3 shipments need a response
Address problems are blocking delivery. Review these exceptions before the next dispatch.
1,200 shipments today
Daily total, including the 3 exceptions.
Keyboard walkthrough: select Reset, then use Tab, Enter, and Escape.
Facility dwell
Observed dwell: 18 hours
Service target: 12 hours
Over
target: 6 hours
Choose a distinct service
Regional International Priority Distribution — North
Regional International Priority Distribution — South
Same prefix, different destinations. The suffix matters to this selection.
Parcels by carrier
Color represents carrier identity, not rank.
- Carrier A240 parcels
- Carrier B180 parcels
- Carrier C90 parcels
Examples could not load. Reload to try again.
Enforcement
behavioral is the strongest mechanism Viewrule expects for the complete rule. Partial checks can still provide supporting evidence without proving the whole requirement.