SAP ABAP Function Module CRM_ISX_INVOICE_READ (Read Billing Document) is using

• Class (4)
• Data Element (1)
• Interface (1)
• Message Class (1)
• Message Number (1)
• Class Method (7)
• Table (7)

#	Object Type	Object Name	Object Description	Note
1	Table	BAPIRET2	Return Parameter	SOURCE ET_RETURN STRUCTURE BAPIRET2 OPTIONAL
2	Table	BAPIRET2	Return Parameter
3	Table	ISX_INVOICE	Invoice structure
4	Table	ISX_INV_HEADER_CRM_IL	Generic invoice header	SOURCE ET_HEADERS STRUCTURE ISX_INV_HEADER_CRM_IL
5	Table	ISX_INV_HEADER_KEY_IL	Invoice Header Key
6	Table	ISX_INV_HEADER_KEY_IL	Invoice Header Key	SOURCE VALUE(IV_INVOICE_KEY) TYPE ISX_INV_HEADER_KEY_IL
7	Table	ISX_INV_ITEM_CRM_IL	Invoice	SOURCE ET_ITEMS STRUCTURE ISX_INV_ITEM_CRM_IL