As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: SMOKE LAVATORY SMOKE ECAM ALERTED IN FLIGHT FOR 2 MINUTES. FLIGHT ATTENDANTS REPORTED ALL LAVATORIES UNOCCUPIED AT TIME OF ALERT, AND NO INDICATIONS OF SMOKE OR SCENTS IN ANY LAVATORY. MAINTENANCE ACCOMPLISHED RESET OF LAVATORY SMOKE DETECTION SYSTEM WITH NO FAULTS NOTED PER AMM 26-17-00.