The number of allowed activation keys per client has now been exceeded

The server property numberOfTrialLicensesAllowedPerClient limits the number of trial licenses that can be activated by a client. A client is uniquely identified by a ComputerID and a ComputerName. A value of -1 means there is no limit.

The enforceMaxTrialsWhenActivating controls whether QLM limits the number of trial keys per system. 

Once the number of trials per client has been reached, you have 2 options to allow a specific client to activate:

1. Increase the value of numberOfTrialLicensesAllowedPerClient 
2. Deactivate some of the activated licenses