SAP ABAP Program LE21NF01 (Include LE21NF01) is using

• Data Element (3)
• Table/Structure Field (20)
• Function Module (5)
• Message Class (2)
• Message Number (2)
• Table (9)

#	Object Type	Object Name	Object Description	Note
1	Message Class	>1	Contract A/R and A/P: Central functions
2	Message Class	EB	IS-U invoicing