WCAG 2.0 · Level AA · Understandable
WCAG 3.3.4 — Error Prevention (Legal, Financial, Data)
For legal, financial, or data submissions, changes must be reversible, checked, or confirmable.
WCAG 3.3.4 at a glance
Level AA · Principle: Understandable · Added in WCAG 2.0. Level AA is the conformance target for the ADA, EAA, and Section 508.
What it means
For legal, financial, or data submissions, changes must be reversible, checked, or confirmable.
Who it helps
Everyone — prevents costly mistakes.
Common failures
- Final purchase or data deletion with no review/confirm step
How to meet WCAG 3.3.4
- Add a review/confirm step, allow correction, or make actions reversible
How to test it
Manual.