Here we would like to draw your attention to OVACT 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).OVACT is a transaction code used for Revenue Recognition: Activations in SAP.
It comes under the package VF0C.
Transaction OVACT technical data table
|Purpose||Revenue Recognition: Activations|