As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CABIN ALT CAUTION THROUGH 10000FT. CABIN ALT WARNING ABOVE 11000 / FOUND GROUND VALVE TO BE DEFERRED IN THE WRONG POSITION. PERFORMED PRESSURIZATION OF THE A/C IAW CRJ-900 AMM 21-31-00-910-801-A02-PSA. PRESSURIZATION WAS GOOD. NO DEFECTS NOTED