As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAKE OFF EICAS MSG AFT CARGO DOOR DISPLAYED AND CARGO DOOR OPEN LIGHT ILLUMINATED. TAKE OFF WAS REJECTED. AFT CARGO DOOR WAS INSPECTED AND FOUND LOCKED AND CLOSED; CARGO DOOR INDICATION WAS DEFERRED UNDER MEL 52-71-1 CAT "C" AND MAINTENANCE ACTIONS WERE ACCOMPLISHED.