# HeroUI Error Message

> HeroUI v3 ErrorMessage — form validation message that appears when a field group is invalid, shown under a TagGroup with selection validation.

- Author: [Hero Ui](https://21st.dev/@hero_ui)
- License: mit
- Tags: Form, Validation, Error Message
- npm dependencies: @heroui/react, @heroui/styles
- Live preview: https://21st.dev/@hero_ui/components/heroui-error-message

## Install

```bash
npx shadcn@latest add "https://21st.dev/r/hero_ui/heroui-error-message?api_key=$API_KEY_21ST"
```

Requires a 21st API key (generate one at https://21st.dev/mcp) passed as `API_KEY_21ST`. Free accounts get a limited number of installs per day; unlimited on a paid plan — see https://21st.dev/pricing.

Full component directory: https://21st.dev/llms.txt · More like this: https://21st.dev/community/components/s/form.md