As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED THAT THE L2 DOOR WOULD NOT LOCK WHEN CLOSED AND ARMED. DISPLAY SHOWS UNLOCKED LATCH INDICATOR ON DOOR PANEL. MAINTENANCE FOUND THE L2 DOOR LATCHED INDICATOR NOT OPERATING PROPERLY, CAUSING THE MESSAGE. MAINTENANCE PLACED DOOR LATCH VISUAL INDICATOR ON MEL IAW AMM.