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3.3.4 Error Prevention (Legal, Financial, Data) – Level AA

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:  

  • 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.

Understanding Success Criterion 3.3.4: Error Prevention (Legal, Financial, Data)

Checklist – Components

Alerts and Messaging

TestPriorityAutomated test?
If modifying or deleting data, is the transaction reversible or does it have a review screen?HighNone
Do I get stopped if navigating off the page without saving?HighNone
Is all data being submitted properly validated?HighNone
If deleting critical data, is the user required to confirm with checkbox as well as button?HighNone