As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CABIN ALTITUDE WARNING MESSAGE. CABIN ALTITUDE EXCEEDED 10,000 FT. WE DID AN EMERGENCY DESCENT TO 10,000 FT AND RAN QRH PROCEDURE, CABIN BEGAN TO SLOWLY PRESSURISE AGAIN. (FLT 6329) INSPECTED AND FOUND TOP AFT CORNER CARGO DOOR SEAL POPPED OUT OF RETAINER. RE-INSTALLED SEAL INTO RETAINER AND PERFORMED PRESSURIZATION CHECK IAW AMM.