WCAG/3-understandable/3.3.6-error-prevention-all.md

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3.3.6 Error Prevention (All)

• Level: AAA
• Guideline: 3.3 Input Assistance
• Principle: 3 Understandable

What it is

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.

How to test

• Check: Submissions are reversible.
• Check: Data entered by the user is checked for input errors and the user is provided an opportunity to correct them.
• Check: A mechanism is available for reviewing, confirming, and correcting information before finalizing the submission.
• Use the sufficient techniques below as acceptable methods when applicable.

Sufficient techniques (W3C)

• Following the sufficient techniques for Success Criterion 3.3.4 for all forms that require the user to submit information

Resources

• WCAG 2.2 SC: https://www.w3.org/TR/WCAG22/#error-prevention-all
• Understanding: https://www.w3.org/WAI/WCAG22/Understanding/error-prevention-all.html
• Quick reference: https://www.w3.org/WAI/WCAG22/quickref/?versions=2.2#error-prevention-all

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