SAP ABAP Class CL_XTAX_RULES_CALCULATION (Rules for calculation (using tax_input structures)) is using

• Class (9)
• Data Element (16)
• Table/Structure Field (134)
• Function Module (1)
• Message Class (1)
• Message Number (1)
• Class Method (84)
• Table (91)

#	Object Type	Object Name	Object Description	Note
1	Function Module	EXTERNAL_TAX_DOC_USER_EXITS	Get customer data proposal through new User-Exit