SAP Coding Block Transaction Codes - AC-COB TCodes SAP Coding Block (AC-COB) TcodesTcodeDescriptionModuleOXK1Coding Block: Maintain SubscreensAC-COBOXK2Display Coding Block SubscreensAC-COBOXK3Coding Block: Maintain CustomerFieldAC-COBOXK4Coding Block: Display CustomerFieldAC-COB