Error Suggestion - Success Criterion 3.3.3 (Level AA)

Question

Do you provide correction suggestions when user input errors occur in your site or application?

Why is this important?

When a user inputs wrong information and an error is detected, suggestions for corrections are helpful so that the user can quickly identify and fix the problem. People with visual impairments or cognitive disabilities heavily rely on these suggestions because they may find it more difficult to make corrections without guidance. (This success criterion builds upon 3.3.1 Error Identification.)

Whom does it benefit?

Example 1

As a person with a cognitive disability who struggles with filling out forms,
I want error correction suggestions clear and straightforward
so that I can fix the form and successfully submit it.

Example 2

As a pearson with a fine motor impairment, typing is a laborious task.
I want to to correct an error on the first attempt
so that I can reduce the amount of typing required to complete my task.

What should you do?

Provide form directions and examples, when appropriate.
Make sure all forms identify input errors and supply correction suggestions.
Suggestions on how to correct errors should be specific but concise.

How do you do it?

If error is due to the format of the input, suggest correct format (e.g. date: MM/DD/YYYY).
If error is due to missing information, let user know by text suggestion that it is required.
If error is due to the user not providing an answer from the required set of options, let user know by text to choose from the list of possible answers.