For Web pages that require the user to submit information, at least one of the
following is true: (Level AAA)
- 1.Reversible: Submissions are reversible.
- 2.Checked: Data entered by the user is checked for input errors
and the user is provided an opportunity to correct them. - 3.Confirmed: A mechanism is available for reviewing, confirming, and correcting
information before finalizing the submission.
Sufficient Techniques for 3.3.6 – Error Prevention (All)
- 1.Following the sufficient techniques for Success Criterion 3.3.4
for all forms that require the user to submit information.
http://www.w3.org/TR/UNDERSTANDING-WCAG20/minimize-error-reversible-all.html