WCAG 3.3.4
Level AA
Understandable
3.3.4 Error Prevention (Legal, Financial, Data)
For legal/financial/data submissions, actions are reversible, checked, or confirmed.
What 3.3.4 Error Prevention (Legal, Financial, Data) means
Users can review and correct important transactions before committing.
How to test
Check high-stakes submissions offer review/confirm or reversal.
How to meet it
Add a confirmation/review step, allow edits, or make submissions reversible.
Need help meeting 3.3.4?
Our IAAP-certified team audits your website and apps against every WCAG 2.2 criterion and delivers code-level remediation.
Official reference: Understanding 3.3.4 Error Prevention (Legal, Financial, Data) (W3C)
More Understandable criteria
3.1.1 Language of Page
3.1.2 Language of Parts
3.2.1 On Focus
3.2.2 On Input
3.2.3 Consistent Navigation
3.2.4 Consistent Identification
3.2.6 Consistent Help
3.3.1 Error Identification
3.3.2 Labels or Instructions
3.3.3 Error Suggestion
3.3.7 Redundant Entry
3.3.8 Accessible Authentication (Minimum)