6.6. Provide explicit error messages and suggestions for correcting errors

Whenever there is a possibility that a form returns errors, the following items must be provided:

  • Explicit error messages.
  • Suggestions for correcting errors.

Error messages must be explicit. That is to say, just by reading the error message:

  • The field concerned must be identifiable.
  • The cause of the error must be understandable.
  • Suggestions must be provided when an error is due to an incorrect input format.
Screen capture 1, caption below.
Screen capture 2, caption below.
In the two examples above, the error messages are thorough and are accompanied by suggestions for correcting the errors.


Error messages must not disappear automatically.

These messages must only disappear on a user action (closing button, display of a new page, new form submission, etc.).


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