As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT CARGO DOOR OPEN LIGHT IN FLIGHT. RETURNED TO KUL. VISUALLY CHECKED CLOSED AND LOCKED. VERIFIED INTEGRITY OF AFT CARGO DOOR CLOSING AND LOCKING MECHANISM. ALL SATISFACTORY. SUSPECT FAULTY MICROSWITCH CAUSING ERRONEOUS DOOR INDICATION. APPLIED MEL 52-71-01.