As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CABIN ALT MESSAGES RECEIVED AT 31000 FT. (PER POH PAGE 4-61 SECTION 4.6.8 IS NORMAL RESPONSE DUE TO THEIR CLIMB RATE) / PERFORMED THE PRESSURIZATION AND DEPRESSURIZATION CHECK IAW AMM 21-31-00-910-801-A02-PSA AND 21-31-00-910-802-A01. OPS CHECKED GOOD. NO DEFECTS NOTED.