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Level AAA − WCAG 2.0 Success Criterion 3.3.6 − Error Prevention (All)

Error prevention provides safeguards against errors that are made by users. Providing users with functions to review and correct information allow users to detect mistakes before making submissions.

Before Rectification

A web form sample for submitting details for newsletter registration.

In this screen indicating the last step of a transaction, users are forced to submit their details without a "confirmation" step.

After Rectification

A web form sample which allows confirmation on details for newsletter registration before submission.

It is better to allow users to first confirm the detailed information, and provide them with an option to change any of the details before making the final submission.

WCAG 2.0 Reference: