Here we would like to draw your attention to WCF_CC transaction code in SAP. As we know it is being used in the SAP CA-WUI (WebClient UI in CA) component which is coming under CA module (Cross Application).WCF_CC is a transaction code used for Upgrade Tool Central Check in SAP.
It comes under the package WCF_BSP_WD_CHECK_TOOLS.
Transaction WCF_CC technical data table
|Purpose||Upgrade Tool Central Check|