SAP ABAP Table E1PREQCR (Header segment) is used by

• Function Module (2)

#	Object Type	Object Name	Object Description	Package	Structure Package	Software Component
1	Function Module	ALE_REQUISITION_CREATE	BAPI -> IDoc: ALE_REQUISITION_CREATE	MEW	APPL	SAP_APPL
2	Function Module	IDOC_INPUT_PREQCR	IDoc -> BAPI: IDOC_INPUT_PREQCR	MEW	APPL	SAP_APPL