As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEVEL FLIGHT AT FL 450 THE PASSENGER DOOR CAS MESSAGE CAME ON. ALSO YELLOW PAX DOOR SHOWED OPEN ON STATUS PAGE. ON DESCENT ALL MESSAGES WENT OUT AT FL320. NO FAULT CODE MESSAGES TO PULL UP. ADJUSTED AFT PASSENGER DOOR PROXIMITY SENSOR. OPS CHECK GOOD. IAW BOMBARDIER GLOBAL 550 AMM TASK 52-70-03-710-801