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W3C WCAG · WCAG-3-3-ERROR-SUGGEST

W3C WCAG 3.3.3 Error Suggestion (Level AA)

When input errors are detected and corrections can be suggested, provide those suggestions to the user, unless doing so would compromise security

MEDIUMRequirementDesign defaultsTechnical standardIn forceApplies from 5 October 2023

Where this comes from

Provision: 3.3.3 Error Suggestion (Level AA)

Instrument: W3C Web Content Accessibility Guidelines (WCAG) 2.2

Citation: W3C, Web Content Accessibility Guidelines (WCAG) 2.2, Success Criterion 3.3.3 Error Suggestion, Level AA, W3C Recommendation 12 December 2024 (first published 05 October 2023)

Text version: W3C Web Content Accessibility Guidelines (WCAG) 2.2, W3C Recommendation first published 05 October 2023; the retrieved edition is the W3C Recommendation of 12 December 2024 (https://www.w3.org/TR/2024/REC-WCAG22-20241212/, errata incorporated); retrieved from w3.org/TR/WCAG22/ on 2026-09-23.

Read the official text ↗

Who it applies to

It applies when all of these are true:

  • Service type — any answer
  • Data categories collected — any answer

What engineering work it implies

Sample acceptance criteria Landfall generates for this obligation:

  • Personal data is encrypted in transit and at rest
  • Access to personal data is role-restricted and access is logged
  • A documented incident-response / breach-notification procedure exists and is tested
  • Third-party processors are bound by equivalent security obligations
  • Unauthorized role cannot read personal-data endpoints (403)

Questions people ask

Does W3C WCAG 3.3.3 Error Suggestion (Level AA) apply to my service?
It applies when Service type — any answer; Data categories collected — any answer.
From when does this apply?
W3C WCAG 3.3.3 Error Suggestion (Level AA) applies from 5 October 2023. Its current status is: in force.

Find out whether this one lands on you

Landfall's pre-scan answers the applicability question above for your product in minutes, then turns every obligation that applies into traceable engineering tickets with a citation chain your auditors can follow.

Run the pre-scanAll W3C WCAG obligations

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