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