As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NOSE DOOR OPEN WARNING MESSAGE AFTER GEAR RETRACTION. CW QRH MESSAGE CLEARED WHEN GEAR WAS DOWN AND LOCKED. ***AIRCRAFT REMOVED FROM SERVICE*** INSPECTED AND FOUND NOSE GEAR DOORS CLOSED AT GATE, C/W AMM TASK 10-11-00-400-801 INSTALLED GEAR PINS. REF 326996/4 FOR MEL