service-manual 1 linked patterns checked
ONS error and status pages
Documents unexpected service problems, short-duration display, logging and rapid fixing, maintenance notice escalation, saved answers, try-again-later copy, and contact routes.
Read with a purpose
What this source can teach
Use this source to study a complete public-service task and the guidance that supports its implementation.
- Start with the original. Open the source and find the guidance or example relevant to your task.
- Trace the connection. Use the claim notes below to see how this site applies the source to specific patterns.
- Check the setting. Compare the source's platform, people, and constraints with your own decision.
Pattern Decisions This Source Supports
| Pattern | Supported decision | Required contract | Claim note |
|---|---|---|---|
| Service unavailable page | Choose service unavailable page when the user cannot proceed because the service entry point, transaction, or route is closed or server-side capacity is unavailable. | The page replaces the affected service route until the service can safely handle requests again. | ONS documents unexpected service-problem pages, saved answers, contact routes, short-duration display, logging, and maintenance notice escalation. |
Comparisons supported by this source
- Service unavailable page vs error state vs offline state vs site alert
ONS documents unexpected service-problem pages, saved answers, contact routes, and escalation to maintenance notice when problems cannot be fixed quickly.
Evidence Role
This source is treated as service-manual evidence. Its value comes from the specific claims and setting described above.
Publisher: Office for National Statistics Service Manual. Last checked: .