As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE EN ROUTE FROM DEN TO MCI CREW REPORTED THE AFT BAGGAGE DOOR FUSELAGE WARNING LIGHT CAME ON AND THE DOOR SHOWED OPEN ON THE MFD, HOWEVER PRESSURIZATION WAS NORMAL. CREW DID NOT DECLARE AND EMERGENCY AND ELECTED TO RETURN TO DEN WHERE THEY LANDED WITHOUT INCIDENT. DOOR WAS OPEN AND CLOSED BY THE RAMP BEFORE MAINTENANCE COULD CONFIRM POSITION OF THE HANDLE. MAINTENANCE PERFORMED OPS CHECK OF THE DOOR PER BOMBA AMM AND OPS CHECKED GOOD.