> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://help.unicornplatform.com/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# How to reassign a custom domain (domain is already taken by someone)

![](https://storage.crisp.chat/users/helpdesk/website/7e782a40c0560c00/image_689x03.png)
This error means that the custom domain is already connected to a site on the platform. 
You need to go to that site, remove the domain from the relevant field, and save the changes. 
After that, the domain will be available for connection to another site.