As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CLT 1856 - CREW RECEIVED LEFT MAIN LANDING GEAR WARNING MESSAGE DURING RETRACTION ON THE MFDU. CREW LOWERED THE GEAR AND RECEIVED A NORMAL DOWN AND LOCKED INDICATION. THE FLIGHT THEN RETURNED TO CLT WHERE LANDING WAS WITHOUT FURTHER INCIDENT. MAINTENANCE FOUND LEFT GEAR DOOR STOP OUT OF ADJUSTMENT. ADJUSTED THE DOOR STOP. (M)