Here we would like to draw your attention to VBC_PROXYMAINTAIN transaction code in SAP. As we know it is being used in the SAP CA-GTF (General Application Functions in CA) component which is coming under CA module (Cross Application).VBC_PROXYMAINTAIN is a transaction code used for Maintain Default Proxy Settings in SAP.
It comes under the package VBC_USER_INTERFACE.
Transaction VBC_PROXYMAINTAIN technical data table
|Purpose||Maintain Default Proxy Settings|