As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED. AT APPROXIMATELY 24000 FEET IN DESCENT, ECAM ADVISORY CABIN PRESSURE 8800 AND SLOWLY CLIMBING. QUICK REFERENCE HANDBOOK RECOMMENDED ACTIONS WERE PERFORMED. SYSTEM 1 WAS ACTIVE. SYSTEM 2 STEPS DID NOT SEEM TO HELP. WENT TO MANUAL UNTIL LANDING IN ELP. REMOVED AND REPLACED PRESSURE CONTROLLERS NR 1 (AALA202101119032) AND NR 2 (AALA202101119011), IAW AMM 21-31-34.