As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EICAS MESSAGE "GEAR DOOR" AND RT MLG DOOR OPEN UPON TAXI IN. DURING TROUBLESHOOTING THE RT GEAR DOOR WILL NOT FULLY CLOSE USING THE COCKPIT GEAR HANDLE OR THE SECONDARY SWITCH ON THE FUSELAGE. THE LT MLG DOOR AND THE NLG DOOR BOTH FUNCTION CORRECTLY. R & R RT MAIN GEAR DOOR SAFETY VALVE IAW AMM 32-35-05. OPS AND LEAK CHECKS NORMAL IAW AMM 32-35-05. EICAS MESSAGE CLEARED.