As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN DOOR: DURING TAXI OUT FOR TAKEOFF, AMBER CABIN DOOR OPEN CAS MESSAGE APPEARED. STOPPED AIRCRAFT AND PERFORMED QRH N1 PROCEDURE, AMBER CABIN DOOR OPEN CAS MESSAGE REMAINED. REMOVED SUSPECTED DEFECTIVE INNER DOOR HANDLE PROX SWITCH & INSTALLED NEW CUSTOMER SUPPLIED PROX SWITCH IAW MM 52-70-10. REMOVED DAMAGED PROX SWITCH CORD SET, INSTALLED CUSTOMER SUPPLIED NEW PROX SWITCH CORD SET IAW MM 52-70-00.