> For the complete documentation index, see [llms.txt](https://help.bots.business/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.bots.business/bjs/error-command.md).

# Error command: "!"

By default we have such error message:

<img src="/files/ORl3EjssFaYRuRYkxzXL" alt="" data-size="original">

You can customize this message. Just create command with name "!"

![](/files/yl6RhMFq2D31onATPlhu)

{% hint style="success" %}
You also can use BJS in error command
{% endhint %}

{% hint style="warning" %}
Your code on error command must be 100% correct. There are no any error message for error command in chat.
{% endhint %}