Two servers cannot be configured at the same FQDN with different 'Treat As Authenticated' options. Cannot configure a server ...

Two servers cannot be configured at the same FQDN with different 'Treat As Authenticated' options.

Cannot configure a server at FQDN [%1] because another server is already configured there with a different 'Treat As Authenticated' option. Existing server has role '%3' (%4) with GUID %2. New server has role '%6' (%7) with GUID %5.

ALL servers at this FQDN will be removed from the configuration until this conflict is resolved.

Cause: This is a configuration problem.
Resolution:
Review the server roles that are configured at this FQDN and ensure that they have identical trust options.