GC Design SystemComponents
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Error summary
<gcds-error-summary>

Also called: error list. An error summary is a list of user errors in a form.

Error summary component preview

Error summary anatomy

  • The heading communicates that there’s a problem. This is set by default and can be edited to be more specific.
  • The error summary is a collection of error messages on the page, listed in order of their appearance on the form.
  • The error summary item links to the error context and includes the same text as the error message (a call to action statement to address the error).
A red rectangle frames a prominent heading that reads 'There's a problem' and a numbered list of 3 links with error summary items in the link text.

Design and accessibility for error summaries

Create usable error summaries

Keep in mind that errors interrupt the flow of a person’s action in your product. This can be jarring and uncomfortable.
  • Provide a clear path to fixing the error. Errors elicit an emotional response that is heightened when the problem is difficult or impossible to resolve.
  • Make the error message and recovery obvious to get a person back on task and regain momentum.
  • Keep the error summary list readable with short and specific error messages.
  • Limit the number of form components on a page that require a response.

Use the error summary with your own component instances

  • Add error messages for your own (non-GC Design System) component instances in your forms.
  • Match the error summary item content to each of your error messages.
  • Order errors in the error summary in the same order that they appear on the form.
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2026-09-15