When completion of a form causes a legal commitment, triggers a financial transaction, or gives consent for personal data to be updated or changed, 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.
Accessibility Requirements for 3.3.4 Error prevention (legal, financial, data) (AA)
- When data is submitted leading to a legal commitment, financial transaction, or an update to personal data, an interim page, alert or status message is presented that allows the user to review, correct, and confirm the information they have entered.
Common mistakes for 3.3.4 Error prevention (legal, financial, data) (AA)
- An online shop where order or personal details are not displayed so the user can confirm them or make changes.
Techniques for Error Prevention (legal, financial, data) (AA)
Each numbered item in this section represents a technique or combination of techniques that the WCAG Working Group deems sufficient for meeting this Success Criterion. However, it is not necessary to use these particular techniques. For information on using other techniques, see Understanding Techniques for WCAG Success Criteria, particularly the “Other Techniques” section.
Common Failure for Error Prevention (legal, financial, data) (AA)
The following are common mistakes that are considered failures of this Success Criterion by the WCAG Working Group
FAQS for Error prevention (legal, financial, data)
Why This is Important?
Legal and financial data make a big impact in people’s lives. If people make mistakes when handling sensitive data, it could lead to serious consequences. Therefore, error recovery here is essential.
How to Implement ?
WCAG recommends 3 ways to handle error recovery:
Reversible – There is a way to reverse your actions (like an undo button).
Checked – The system checks the data for errors and provides the opportunity to fix them.
Confirmed – There is a way to review and confirm the data before submitting it.
How to Test?
This requires manual testing. We have to go through all legal or financial process and assess for error recovery.