As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FWD LAVATORY SMOKE WARNING MESSAGE DURING FLIGHT, F/A INVESTIGATED, NO INDICATION OF SMOKE, RESET, THEN NORMAL OPS. PERFORMED AN OPERATIONAL TEST FOR THE FWD LAVATORY SMOKE DETECTOR IAW AMM 26-16-00. OPS TESTED GOOD. NO DEFECTS NOTED. ACFT OK FOR SERVICE.