Here we would like to draw your attention to W3CUSX transaction code in SAP. As we know it is being used in the SAP BC-DWB (ABAP Workbench, Java IDE and Infrastructure in Basis) component which is coming under BC module (BASIS).W3CUSX is a transaction code used for Customizing Parameters for MiniApps in SAP.
It comes under the package W3_APIX.
Transaction W3CUSX technical data table
|Purpose||Customizing Parameters for MiniApps|