XML Files are ignored for MDG-S

Hi

For MDG-S we are using Vender Like UI.

I have to do initial upload from from source system for vendors.

Can I do it without creating BP in source system?

I tried in DTIMPORT with message type CREMAS06 (Which is added in Object type SUPP with detailed information with import class CL_MDG_BS_VEND_IDOC_FILELOADER and converter class as CL_MDG_SUPPLIER_TRANSFORM.  But in DTIMPORT it says Message Type CRMAS06 is found but input XML file (Which is created by IDOC with message type CREMAS06) is ignored.

Also if I add ADRMAS03 message type then it gives error message as Fatal internal error message.

Any idea about this, how to fix it?