The tMirrorSourceLiSubProblem event is generated when the system fails to intercept traffic for a subscriber. The SAP where the traffic comes into the system is indicated in the objects tMirrorNotifyLiSvcId, tMirrorNotifyLiPortId and tMirrorNotifyLiSapEncapValue. [CAUSE] Detailed information about the exact cause of the notification is available in the object tMirrorNotifyLiDescription. [EFFECT] Traffic of a subscriber subject to Lawful Intercept is not intercepted.