As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED. DURING FLIGHT RECEIVED A LAVATORY SMOKE WARNING AND AN ECAM LAVATORY SMOKE MESSAGE. NO SMOKE OBSERVED IN ANY LAVATORY, FALSE ALARM, ECAM COULD NOT "RECALL". PERFORMED "LAV SMOKE DETECT TEST" IAW TSM 26-17-00-710-001-A WITH NO FAULTS NOTED AT THIS TIME.