As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING DESCENT SMOKE LAV SMOKE ECAM MOMENTARILY. LAV INDICATION LIGHT DID NOT ILLUMINATE HOWEVER PAX SAID MID-LAV SMELLED OF SMOKE. LAV INSPECTED, NO RESIDUE NOTED. INSPECTED MID LAV. NO TRACE FOUND. FALSE ALARM AS NOTED BY FLT CREW. OPS TESTED LAV SMOKE DETECTION. TEST OK. REF. A321 AMM26- 17. (LP# 7774354)