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+[Back to 3 Understandable index](index.md)
+
+# 3.3.1 Error Identification
+
+- Level: A
+- Guideline: 3.3 Input Assistance
+- Principle: 3 Understandable
+
+## What it is
+
+If an input error is automatically detected, the item that is in error is identified and the error is described to the user in text.
+
+## How to test
+
+- Check: If an input error is automatically detected, the item that is in error is identified and the error is described to the user in text.
+- Use the sufficient techniques below as acceptable methods when applicable.
+
+## Sufficient techniques (W3C)
+
+- G83: Providing text descriptions to identify required fields that were not completed
+- ARIA2: Identifying a required field with the aria-required property
+- ARIA21: Using aria-invalid to Indicate An Error Field
+- SCR18: Providing client-side validation and alert
+- PDF5: Indicating required form controls in PDF forms
+- ARIA18: Using aria-alertdialog to Identify Errors
+- ARIA19: Using ARIA role=alert or Live Regions to Identify Errors
+- G84: Providing a text description when the user provides information that is not in the list of allowed values
+- G85: Providing a text description when user input falls outside the required format or values
+- SCR32: Providing client-side validation and adding error text via the DOM
+- PDF22: Indicating when user input falls outside the required format or values in PDF forms
+
+## Advisory techniques (W3C)
+
+- G139: Creating a mechanism that allows users to jump to errors
+- G199: Providing success feedback when data is submitted successfully
+
+## Resources
+
+- WCAG 2.2 SC: https://www.w3.org/TR/WCAG22/#error-identification
+- Understanding: https://www.w3.org/WAI/WCAG22/Understanding/error-identification.html
+- Quick reference: https://www.w3.org/WAI/WCAG22/quickref/?versions=2.2#error-identification
+
+[Back to 3 Understandable index](index.md)