As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: ON DESCENT INTO CLT ECAM ALERT "SMOKE, LAVITORY SMOKE" CAME ON FOR LESS THAN ONE MINUTE THEN CLEARED. FLIGHT ATTENDANTS CHECKED THE LAVITORIES AND DID NOT FIND ANYTHING. MAINTENANCE PERFORMED OPERATIONAL TEST PER TSM 26-17-00. INTERROGATED MCDU, RAN SELF-TEST AND NO FAULTS APPEARED.