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If users are making a legal commitment, a financial transaction or updating personal data, give them a way to review and check that the information they’ve entered before submitting it.
When completion of a form causes a legal commitment, triggers a financial transaction, or gives consent for personal data to be updated, the user must be able to review, correct, and confirm that the information they have entered is correct, or they must be able to reverse the decision.
This provides safeguards to prevent people with disabilities, and indeed all users, from making avoidable mistakes.
3.3.4 Error Prevention (Legal, Financial, Data): For Web pages that cause legal commitments or financial transactions for the user to occur, that modify or delete user-controllable data in data storage systems, or that submit user test responses, at least one of the following is true: (Level AA)
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.
This applies to native apps by replacing “Web pages” with “screens”.
See the W3C’s detailed explanation of this guideline with techniques and examples.
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This document is in beta. Help us by reporting issues via Github or email