• SB1 – Products File 
• SD1 – Inflow Invoices Items
• SF1 – Inflow Invoices Header
• SD2 – Outflow Invoice Items
• SF2 – Outflow Invoices Header
• SF3 – Tax Records
• SF4 – Types of Inflow and Outflow
• SFB – Variable Taxes
• SFC – Binding TIO x Tax
• SFF – Tax Exceptions