If you see the above message when attempting to return a borrowed license before the expiration date, the -2 -p license manager startup option might have been set. The -2 -p option is not supported. If you are running an earlier release, you must manually unset the option. In this case, you may also see the following in the log file:

UNAUTHORIZED lmremove request from <user> at node <host>.

You may also see the above message if the existing server specification does not contain the machine from which the license was borrowed. To correct the problem, add the machine to the server specification. If the Ansys Borrow Utility is open when the server specification is changed to contain this server, you must close and restart the utility after changing the license server specification and before returning the borrowed license.