Rule: Error correction suggestions

Rule ID	Error 3
Conformance	Required
Definition	When input error is automatically detected and suggestions are automatically known, the suggestions must be provided to the user (some exceptions).
Purpose	Users benefit from being informed of invalid input and on how to correct invalid input.
Conformance	Required
WCAG Success Criteria	Success Criterion 3.3.3 Error Suggestion Other Related Success Criterion:
Rule Category	Forms
Rule Scope	Element
Techniques	Add `aria-describedby` reference on the form control or widget to reference suggestion information. Use a popup list to provide suggested values for valid input.
Information Links	HTML Specification: The @label@ element Accessible Rich Internet Applications (WAI-ARIA) 1.2: aria-invalid H44: Using label elements to associate text labels with form controls ARIA1: Using the aria-describedby property to provide a descriptive label for user interface controls ARIA19: Using ARIA role=alert or Live Regions to Identify Errors