Name your Managed Paths wisely

When designing your SharePoint architecture you should consider the names of the Managed Paths. SharePoint cannot create a library or list that has the same name as one of the Managed Paths. This means that if you have 'Projects' as a Managed Path, users cannot create a library or list called 'Projects'. If someone tries that the following error occurs:

[Name] cannot be used as a site name. Site names cannot contain certain reserved words and cannot begin with an underscore. Please enter a different name

An error like in the screenshot below appears. It doesn't matter whether you use an explicit inclusion or a wildcard inclusion

My advise is to name your Managed Paths shortly, like: 'proj' instead of 'projects', 'loc' instead of 'locations', 'arch' instead of 'archive' etc... You get the idea ;)