3.3.1 - Error identification
The intent of this success criterion is to ensure that users are aware that an error has occurred and can determine what is wrong. The error message should be as specific as possible. In the case of an unsuccessful form submission, re-displaying the form and indicating the fields in error is insufficient for some users to perceive that an error has occurred.
Ways to meet the criterion
If an input error is automatically detected, the item that is in error is identified and the error is described to the user in text. The system then enables users to CORRECT their input mistakes.
Types of identification:
- At each input field – client-side
- Upon submission – server side