Here we would like to draw your attention to ECM_APP_CONF transaction code in SAP. As we know it is being used in the SAP BC-ECM (Enterprise Content Management (ECM) in Basis) component which is coming under BC module (BASIS).ECM_APP_CONF is a transaction code used for Edit ECM App to Rep mapping (custom) in SAP.
It comes under the package S_NWECM_CONFIG.
Transaction ECM_APP_CONF technical data table
|Purpose||Edit ECM App to Rep mapping (custom)|