[Success Criteria] 3.3.6 Error Prevention (All) (AAA) [Description] For Web pages that require the user to submit information, at least one of the following is true: Reversible: Submissions are reversible. Checked: Data entered by the user is checked for input errors and the user is provided an opportunity to correct them. Confirmed: A mechanism is available for reviewing, confirming, and correcting information before finalizing the submission [Sufficient Techniques] Techniques for SC 3.3.6 [Specific Benefits] 
Providing safeguards to avoid consequences resulting from mistakes helps users with all disabilities who may be more likely to make mistakes.