SAP ABAP Class CL_WCAT_CUSTOMER_BILLING_DOC (Customer billing document) is using

• Class (15)
• Table/Structure Field (18)
• Message Class (1)
• Message Number (2)
• Class Method (18)
• Table (7)

#	Object Type	Object Name	Object Description	Note
1	Table	KOMZRKE	Payment Document: External Data Transfer Header Data
2	Table	KOMZRPE	Payment Document: Transfer External Item Data
3	Table	VBRK	Billing Document: Header Data
4	Table	VBRK	Billing Document: Header Data
5	Table	VBRK	Billing Document: Header Data
6	Table	VBRK	Billing Document: Header Data
7	Table	VBRK	Billing Document: Header Data