CLP/ELMS Registration Warning Message

I show the following message on Networker that I cannot clear:

Alert Message:

CLP/ELMS server for basic license information found the following: 'Can't establish connection to the license server. Flexlm error -15'. Please check the network communication between NetWorker Server and License Server. Make sure the license server daemon is running. Or be sure the license files on both hosts have the same port number.

Alert Time:  Fri Jun 26 19:50:37 2020

Alert Priority: warning

Alert Category: registration

NetWorker 9.2.2.0.Build.396 Commercial Edition/20