As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LAVATORY SMOKE EICAS MESSAGE ON SHORT FINAL & ALARM FROM FORWARD LAV. FALSE ALARM NO SMOKE. OBSERVED NO EVIDENCE OF SMOKE OR EXCESS HEAT IN FWD LAV A. R & R SMOKE DETECTOR IN LAV A AS PRECAUTION. REF AMM 26-14-01. OPS TEST NORMAL. OK TO CONTINUE.