As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW RECEIVED AFT CARGO DOOR OPEN WARNING MESSAGE. PRESSURIZATION WAS NOT LOST, CREW DECLARED AN EMERGENCY AND CONTINUED ONTO DESTINATION WHERE THEY LANDED WITHOUT INCIDENT. MAINTENANCE FOUND THE AFT CARGO DOOR HANDLE OUT, RESET AFT CARGO DOOR HANDLE IAW AMM AND OPS CHECKED GOOD.