Here we would like to draw your attention to VTFA transaction code in SAP. As we know it is being used in the SAP SD-BIL (Billing in SD) component which is coming under SD module (Sales & Distribution).VTFA is a transaction code used for Order to bill copying control in SAP.
It comes under the package VF0C.
Transaction VTFA technical data table
|Purpose||Order to bill copying control|