As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT 32,000 FT, RECEIVED THE EICAS MESSAGE FOR AFT SERVICE DOOR OPEN. FOLLOWED CHECKLIST AND VERIFIED INDICATIONS WERE NORMAL. MESSAGE EXTINGUISHED BEFORE LANDING. CLEANED AFT PAX DOOR CLOSE SENSOR SPRING IAW AMM 53-23-04. OPS CHECKED GOOD.