J2SE property file format.
mserver.jp1event.system.mapping.severity.Message-ID = Criticality-of-JP1-event
You use this message mapping file for converting the log messages output by Management Server into JP1 event.
mserver.jp1event.system.mapping.severity.KEOS10001-E=Error
mserver.jp1event.system.mapping.severity.KEOS10010-I=Information