Here we would like to draw your attention to WE35 transaction code in SAP. As we know it is being used in the SAP BC-MID (Middleware in Basis) component which is coming under BC module (BASIS).WE35 is a transaction code used for Mapping of IDoc Types in SAP.
It comes under the package SED.
Transaction WE35 technical data table
|Purpose||Mapping of IDoc Types|