This product supports license usage logging with the help of the AutoPass License Server. See License Usage Logging with AutoPass License Server.
The licensing system creates a usage log file that details all licensing activity. In addition to monitoring usage, the file is a useful licensing diagnostic tool.
Log files are called lservrc.log. When they reach 10 MB in size they are archived to lservrc.log.xxx where xxx is an incremental number for the archive file.
As these files contain important and useful information, and to maintain disk space, we recommend that you manage these files accordingly.