As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: ECAM SMOKE LAVATORY SMOKE CAME ON FOR ABOUT FIVE SECONDS DURING CRUISE. ALL LAVATORIES INVESTIGATED WITH NO ABNORMALS NOTED. TROUBLESHOT ECAM SMOKE LAVATORY SMOKE INDICATION REF TSM 26-17-00-810-804-A. ALL TESTS & CHECKS NORMAL, ALL LAVATORY SMOKE DETECTORS TEST NORMAL.