As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: LAVATORY SMOKE MASTER WARNING AND ECAM DURING FLIGHT. FLIGHT CREW FOUND NO EVIDENCE OF SMOKE. MAINTENANCE ACCOMPLISHED TSM 26-17-00-810-804-A AND FOUND THE SMOKE DETECTOR FUNCTIONED NORMALLY AND NO FAULT WAS DETECTED.