As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GEG - FLIGHT 2427 - FLIGHT RETURNED TO FIELD WHEN AFTER TAKEOFF AND CLIMBING, THE CREW RECEIVED A FUSELAGE DOOR WARNING LIGHT. MAINTENANCE INSPECTED THE AIRCRAFT AND FOUND THE PROX SENSOR WIRE FOR AFT BAG DOOR FAULTY. THE WIRE WAS REPAIRED AND THE OPERATIONAL CHECKS WERE GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE.