As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SHIP 3309 DURING CRUISE FLIGHT RECEIVED ECAM MESSAGE DOOR L AFT CABIN, COMPLUIED WITH ECAM AND ORH PROCEDURES. CORRECTIVE ACTION: 4L CABIN SHOWING OPEN ON ECAM DOOR PAGE WHEN CLOSED. CLEANED/ LUBED UPPER DOOR PROX SWITCH, 4L DOOR INDICATING NORMALLY. (4348518)