Here we would like to draw your attention to OY25 transaction code in SAP. As we know it is being used in the SAP BC-SRV (Basis Services / Communication Interfaces in Basis) component which is coming under BC module (BASIS).OY25 is a transaction code used for CS BC: Set Up Client in SAP.
It comes under the package SBSRVC.
Transaction OY25 technical data table
|Purpose||CS BC: Set Up Client|