Evidence review
What to inspect before changing anything
Start with the delivered website and the real user journey. Record the current state so the team can distinguish an observed problem from an assumption and compare the same surface after deployment.
- 01Trigger validation, authentication and server failures
- 02Inspect public bodies, headers and client consoles
- 03Review correlation IDs and protected logs
Implementation
A practical improvement plan
Make the smallest coherent change that solves the observed problem. Keep normal code review, accessibility, security and product checks in the loop instead of optimizing for the scan alone.
- 01Return stable public error codes and actions
- 02Keep stack traces server-side
- 03Redact tokens, personal data and infrastructure detail
Verification
How to verify the result
Verification should test the intended outcome and the most likely regression. Use the production delivery path whenever headers, caching, rendering or third-party services affect the result.
- 01Test production mode rather than local development
- 02Confirm support can trace a public request ID
- 03Verify unexpected exceptions use the safe envelope
Common pitfall
A shortcut to avoid
Replacing every error with a vague message can protect internals but make recovery and support unnecessarily difficult.
Further reading
Primary guidance and references
These sources provide standards, security guidance or the interpretation framework used to keep this guide bounded. Product-specific implementation still requires review in the actual codebase.