As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED AN INTERMITTANT SERVICE DOOR EICAS MESSAGE AFTER TAKEOFF. CREW ELECTED TO RETURN TO CLT AND LANDED WITHOUT INCIDENT. MAINTENANCE INSPECTED AND REMOVED THE INNER HANDLE. MAINTENANCE PERFORMED A DETAILED INSPECTION OF THE HANDLE ASSEMBLY. NO DEFECTS FOUND. MAINTENANCE REINSTALLED THE INNER HANDLE IN ACCORDANCE WITH THE AIRCRAFT MAINTENANCE MANUAL. MAINTENANCE PERFORMED A CHECK OF THE PROXY SENSOR PX36 WHICH CHECKED GOOD. AIRCRAFT WAS RELEASED FOR SERVICE.