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 ALERTED ON THE ECAM ONCE. THE FLIGHT ATTENDANT STATED THE RIGHT AFT LAVATORY SMOKE ALERTED TWICE ON THEIR PANELS. THEY STATED NO ONE WAS IN THE LAVATORY AT THE TIME OF THE ALERTS. MAINTENANCE VERIFIED NO HISTORY OR POST FLIGHT REPORTS, PERFORMED OPERATIONAL TEST SDCU SMOKE DETECTORS TEST PER AMM 26-17-00.