As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BELOW 10000 FT ON APPROACH, RECEIVED SMOKE AFT LAVATORY WARNING MESSAGE. DECLARED EMERGENCY AND LANDED. PERFORMED GVI OF LAVATORY SMOKE DETECTION SYS, LAVATORY FIRE EXTINGUISHING SYS, AND PERFORMED OPS CHECK OF LAVATORY SMOKE DETECTION SYS IAW AMM 26-16-00. OPS CHECKED GOOD, ACFT OK FOR SERVICE.