# WCAG 2.2 – 3.3.3 Error Suggestion

- Level: AA
- Principle: 3 Understandable
- Guideline: 3.3 Input Assistance
- Introduced in: WCAG 2.0

## What the rule requires

Error messages do not just say something is wrong, they also say how to get it right.

## How to get it right

Write “Please enter the date as DD/MM/YYYY, for example 24/12/2026” instead of “Invalid input”.

## Who benefits

- People with cognitive disabilities
- Blind people

## Sources

- [This rule on wcag.dehl.net](https://wcag.dehl.net/en/wcag/3-3-3/)
- [Interactive demo](https://wcag.dehl.net/en/demos/#forms)
- [Official W3C explanation](https://www.w3.org/WAI/WCAG22/Understanding/error-suggestion)
- [Techniques (WCAG Quick Reference)](https://www.w3.org/WAI/WCAG22/quickref/#error-suggestion)

_Plain-language explanation. Only the original W3C text is normative._