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 DESCENT ECAM WARNING "SMOKE - LAVATORY SMOKE" CAME ON THEN EXTINGUISHED, THEN REPEATED TWO TIMES WITHIN ONE MINUTE. FLIGHT ATTNDANT CHECKED FWD LAV. NO SMOKE NOTED. REPLACED SMOKE DETECTOR PER AMM 26-17-00-710.