Change groups sites/URL URL.
Today when you create a group, it is created under the "/sites" managed path. Please change this so we always can have complete governance over the /sites-path. So when we want to create new site-collections you won't get URL-conflicts.
We’ve recently shipped the ability to change the SharePoint Site URL associated with a Microsoft 365 Group (formerly Office 365 Group). https://www.microsoft.com/en-us/microsoft-365/roadmap?filters=&searchterms=56205. This can be done via the SharePoint Admin Center. The site URL can be changed on a per-site basis, but currently we don’t have plans to allow admins to change the global default from “/sites” to something different.
Shawn Fagan commented
Office 365 Groups should go under it's own Managed Path of Groups. That would solve any and all URL Conflicts.
Thomas Radman commented
absolutely ridiculous, that the development team or at least the product manager did not think of that problem!
Sitecollections created through the groups-feature are also not shown on the admin page (https://tenant-admin.sharepoint.com/_layouts/15/online/SiteCollections.aspx)
So it´s always guesswork when you try to create new sitecollections
Please change the default managed path for groups to /groups/