SAP ABAP LDBA ELM (ELM) is using

• Table (5)

#	Object Type	Object Name	Object Description	Note
1	Table	EKBE	History per Purchasing Document
2	Table	EKET	Scheduling Agreement Schedule Lines
3	Table	EKKN	Account Assignment in Purchasing Document
4	Table	EKKO	Purchasing Document Header
5	Table	EKPO	Purchasing Document Item