As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT ARRIVAL AT GATE CABIN PRESSURIZED LIGHTS FLASHING AT ALL CABIN DOORS CABIN NOT PRESSURIZED. CORRECTIVE ACTION: PERFORMED RESIDUAL DOOR PRESS INDICATION TEST OF DSCS1 & 2. SYSTEM OPERATIONS CHECKS GOOD, OK FOR SERVICE, REF A350 MM A350-A-52-71.