Here we would like to draw your attention to OY01 transaction code in SAP. As we know it is being used in the SAP CA-CUS (Global Organization Customizing in CA) component which is coming under CA module (Cross Application).OY01 is a transaction code used for Customize: set up countries in SAP.
It comes under the package BCUC.
Transaction OY01 technical data table
|Purpose||Customize: set up countries|