# Error Message Show an error message when there is a form field validation error. In the error message explain what went wrong and how to fix it. For guidance and examples on using error messages in a form, refer to the [Field](/docs/components-forms-field--docs) and [Field Set](/docs/components-forms-field-set--docs) documentation. Read the documentation by [NL Design System](https://www.nldesignsystem.nl/richtlijnen/formulieren/foutmeldingen) and [Gov.uk](https://design-system.service.gov.uk/components/error-message/) for more information on the contents of error messages and when to show them.