To Activate Change History1. SE38 -> RCCLUKA2 Run for Class Type2. English : SPRO -> Cross-Application Components -> Classification System -> Classes -> Maintain Object Types and Class Types Korean : SPRO -> CA 구성요소 -> 분류 시스템 -> 클래스 -> 오브젝트유형 및 클래스유형 유지보수 # Tcode : O1CL3. Double click MARA table4. Double click Class Types5. Double click 0016. set Multiple objs allowed & Change Docs7. Double clic..