license file sent to you by Serena, open the Mariner Adminstration tool and login to the database in question. Click the Add License link and navigate to the .pel file you were sent.
Please use the Active Diagnostics trace setting for limited periods of time as the additional logging is causing Concurrent License to be retained for longer than expected.
Concurrent Licenses are not Returned to the License Pool within 5 to 10 mins after Session Timeout when using Service Request Center If an SBM interface is used then the licenses are released as expected.