As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(AIRCRAFT 6702, L/P 6309704) L AFT ENT DOOR EICAS MESSAGE AND ENTRY DOORS LIGHT ON LEFT OVRHEAD PANEL - QRH PROCEDURE ACCOMPLISHED NO PRESSURIZATION PROBLEMS. CORRECTIVE ACTION: PERFORMED VISUAL INSPECTION OF L AFT ENT DOOR FOUND DEBRI. CLEANED DEBRI OPERATED DOOR MULTIPLE TIMES ARMED AND DISARMED DOOR AND SLIDE ALL NML. NO EICAS MSG OR OVERHEAD LIGHTS ON.