SAP ABAP Program LK23EF03 (second level for selecting) is using

• Data Element (1)
• Table/Structure Field (63)
• Function Module (6)
• Message Class (1)
• Message Number (3)
• Table (9)
• View (2)

#	Object Type	Object Name	Object Description	Note
1	Message Class	BK	Create, Display, Reverse Controlling Document