Understandable
WCAG 3.3.4
Error Prevention
For legal, financial, or data-deletion actions: let users review before submitting, allow undo, or confirm the action. Reduces consequences of mistakes for everyone.
In plain terms
For important actions like payments or deletions, let people review and undo before anything becomes final.
Why this matters
For legal, financial, or data-deleting actions, a single slip can have serious, irreversible consequences — a risk that runs higher for people with cognitive or motor disabilities.
How to detect
Quick check
For high-stakes submissions (payments, deletions, legal agreements), check for at least one of: a review-and-confirm step, an undo, or validation with a clear chance to correct.