When access UMP, error messages are returned:
Headline: Liferay Portal Enterprise Edition 6.1.30EE
Message: This server is not registered
Server Info: Server information for Host Name, IP Address, MAC Address
Licenses Registered: There are no licenses registered.
Release : 8.51
Component : UIM - UMP
Restore wasp folder from a backup taken before the issue if you have and then redeploy UMP packages to the UMP robot and restart the nimbus servcie.
Otherwise, run the UMP installer again on UIM server and reboot UMP server as requested.