Here we would like to draw your attention to VSBA 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).VSBA is a transaction code used for Archiving for Self-Billing in SAP.
It comes under the package VASB.
Transaction VSBA technical data table
|Purpose||Archiving for Self-Billing|