Hi Iphoenix,
Your scenario would be as follows:-
i) Graphical mapping - map from source format to XML representation of DESADV format. This happens during the request message mapping step.
ii) BIC mapping - convert the XML representation of DESADV to a DESADV flat EDI file.
To achieve this, you will have to obtain the XSD for the DESADV XML format. You should be able to find this XSD from the content pack that came with the Seeburger installation.
As for viewing the BIC mapping, once you have BIC MD installed, you can load the standard mappings already provided by Seeburger and then search for the specific X2E mapping that you want to view. The standard mapping should also come with the content pack - the name would be something like prj_SeeburgerFormatMapping_2.1.zip.bicmd
Rgds
Eng Swee