As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BOS - FLT 4532 - AFTER TAKEOFF, CREW NOTICED A FORWARD CABIN DOOR WARNING LIGHT ILLUMINATE. AIRCRAFT RETURNED TO BOS WITHOUT INCIDENT. MAINTENANCE WAS DISPATCHED AND DETERMINED MICROSWITCH ON DOOR TO BE BAD. AFTER ENSURING CABIN DOOR CAN BE CLOSED AND LOCKED, WARNING SYSTEM WAS DEFERRED PER MEL. AIRCRAFT WAS THEN RETURNED TO SERVICE AND OPERATED UNDER MEL. (X)