SAP ABAP Program WLFRE004 (Events for displaying invoice list with item data) is using

• Class (1)
• Table/Structure Field (13)
• Function Module (3)
• Message Class (1)
• Message Number (1)
• Class Method (1)
• Table (2)

#	Object Type	Object Name	Object Description	Note
1	Message Class	WS	Vendor Billing Document