SAP ABAP Interface IF_MRM_CONSTANTS (Invoice Verification Constants) is using

• Data Element (12)
• Table/Structure Field (6)
• Table (3)

#	Object Type	Object Name	Object Description	Note
1	Table	EKPO	Purchasing Document Item
2	Table	RBKP	Document Header: Invoice Receipt
3	Table	T169	SAP Transaction Control, Invoice Verification/Valuation