Here we would like to draw your attention to VTAF 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).VTAF is a transaction code used for Bill. doc. to order copying control in SAP.
It comes under the package VF0C.
Transaction VTAF technical data table
|Purpose||Bill. doc. to order copying control|