As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EN ROUTE, THE CREW RECEIVED A LAV SMOKE CAS MESSAGE. UPON ARRIVAL, MAINTENANCE INSPECTED AND CLEANED THE LAV DETECTOR CANNON PLUG IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 26-00-00. OPERATIONAL CHECKS WERE PERFORMED AND THE AIRCRAFT WAS RELEASED FOR SERVICE.