As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CABIN DOOR OPEN CAS MESSAGE CAME ON IN FLIGHT WHEN REACHING FL 400. PERFORMED CABIN DOOR OPEN QRH. LIGHT STAYED ON THE WAY THROUGH LANDING. FOUND ELECTRICAL CONECTOR PC058 ON CABIN DOOR LATCHING PAWL PROXIMITY SWITCH SC007 LOOSE. RESECURE CONNECTOR AS REQUIRED. VERIFIED RIGGING OF PROXIMITY SWITCH. OPERATIONS CHECKS NORMAL AT THIS TIME, REF CE-680A MM 52-70-10.