What was found
CREW REPORTED AN OVERWING EXIT OPEN LIGHT ON EICAS, RETURNED TO FIELD AT DEN AND LANDED WITHOUT INCIDENT, EMERGENCY WASN'T DECLARED. MAINTENANCE WAS DISPATCHED TO THE AIRCRAFT TO TROUBLESHOOT. MAINTENANCE FOUND THAT ONE OF THE OVERWING EXIT DOOR WAS PARTIALLY OUT OF THE UPPER AFT ROLLER, MAINTENANCE RE-INSTALLED THE DOOR, VISUALLY VERIFIED DOOR WAS ENGAGED, AND PRESSURIZED THE A/C TO 8.0 NO LEAKS NOTED. A/C WAS THEN RETURNED BACK INTO SERVICE.