What to change
A missing-page design and a missing-page response are separate acceptance checks. Ask the developer to show the response status for an invented address alongside the visible message. Preserve a helpful route back into the website while making the underlying absence clear to clients. Include a valid article as a control so a broad error-handler change cannot silently turn working pages into failures.
A worked example
Illustrative example
Illustrative test: Compare a valid guide, an invented guide and a retired address with no replacement.
How to check the result
The nonexistent route reports a missing resource and retains useful navigation.
A mistake to avoid
Redirecting every unknown address to the homepage obscures genuine missing destinations.
Your action checklist
Use these checks to prepare a discussion with your team or supplier. Tick a check when you have recorded the decision or evidence, rather than when a feature has simply been promised.
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Further reading
These primary sources provide additional context for the project decisions above.
Related decisions
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