Hi,
Go to the BSP_WD_CMPWB and in runtime repository-> model you will find the component set.
Now, in webui go to the field which has been extended and press F2. Note the context node.
Go to the Context node in the view oft he component. Note the genil object beside the name of the context node.
Now go to Genil_bol_browser and perform a query where you can get this genil object. It may give you some idea about the component.
you may get extended objects in spro->crm->crm cross-application components->generic Interaction Layer/Objecr Layer-> Component Specific Settings -> Business Trnasactions -> Extended *