SAP ABAP Function Module WSUBST_PROCESS_EXTENSION (Substitution durchführen) is using

• Data Element (2)
• Table/Structure Field (26)
• Function Module (10)
• Message Class (1)
• Message Number (4)
• Table (5)

#	Object Type	Object Name	Object Description	Note
1	Table	EKBE	History per Purchasing Document
2	Table	EKBEL	Purchasing Document Number and Header Items
3	Table	WSUBST_CTRL	Customizing Table Extension Logic
4	Table	WSUBST_WORKLIST_DELIVERY_STY	Structure Type of Worklist for Delivery Creation
5	Table	WSUBST_WORKLST	Worklist Substitution Proposals