3. UnderstandableLevel A
3.3.1 Error Identification
오류 식별
Summary
When an input error is detected automatically, the item in error must be identified in text. A red border alone conveys nothing to screen reader users or users who cannot distinguish the color. In practice the message also needs to be programmatically tied to the field.
Common failures
- Signalling errors with border color only, never stating in text which field failed and why.
- Showing an error summary at the top without linking each message to its field via `aria-describedby`.
Corresponding KWCAG 2.2 items
- 7.4.2 Error Correction