As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 845 - PHX-SEA - AIR TURNBACK DUE TO AFT CARGO DOOR OPEN INDICATION IN FLIGHT, PRESSURE OK. AIRCRAFT RETURNED TO PHX AND LANDED WITHOUT INCIDENT. ECAM DOOR WARNING INDICATION WAS GREEN WHEN AIRCRAFT RETURNED TO GATE. AFT CARGO DOOR WAS CLOSED AND ALL LATCHES WERE IN GREEN. ECAM DOOR PAGE INDICATOR WAS PLACED ON MEL 52-70-01. AIRCRAFT RETURNED TO SERVICE. (W)