As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: FLIGHT CREW REPORTED THAT FOR A FEW SECONDS, SMOKE LAVATORY SMOKE ECAM DESCENDING THROUGH FL 210. MAINTENANCE REPORTED THAT NO FAULT WAS NOTED AT THE GATE AND NO FAULTS WERE NOTED ON THE SMOKE DETECTOR CONTROL UNIT GROUND REPORT.