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 ECAM WARNING MESSAGE DISPLAYED. MESSAGE CLEARED AFTER ABOUT 10 SECONDS. NO EVIDENCE OF ACTUAL LAVATORY SMOKE REPORTED FROM FLIGHT ATTENDANTS. MAINTENANCE ACCOMPLISHED TSM TASK 23-73-00, NO FAULTS NOTED.