As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 1050 - CLT - EES - CIDS MESSAGE R-MID DOOR LOW PRESSURE. MAINTENANCE PERFORMED TROUBLESHOOTING MANUAL (TSM) 52-22-00-810-807 BITE CHECK OF CIDS WITH NO FAULTS. FOUND LEFT FORWARD BOTTLE LOW - SERVICED BOTTLE IAW AIRBUS MAINTENANCE MANUAL 52-22-00-614-002.