3.3.3: Error Suggestion

What it means

When an input error is detected, suggest corrections when you can do so safely. Help users fix mistakes instead of only saying something is wrong.

Spell-check and format hints reduce repeat submissions.

How to fix it

• Suggest valid formats when email or date parsing fails.
• Offer “Did you mean?” for common domain typos in email fields.
• List allowed values when a selection is invalid.
• Do not suggest corrections that leak private data about other users.

Quick examples

• Good: Invalid date shows “Use format DD/MM/YYYY, for example 05/09/2026”.
• Bad: Wrong postcode shows only “Invalid” with no hint.
• Good: Email typo “user@gmai.com” prompts “Did you mean gmail.com?”
• Bad: Password error gives no guidance on minimum requirements after failure.