Who knows a lot about the mapping of GDSN Trade Item extension to SAP message types?

Hi,
who knows a lot about the mapping of GDSN Trade Item extension to SAP message types?

Does somebody know whether it for the Trade Item Extension also a mapping gives, how for the base message types?

Who can say me, if changes of the GS1-GDSN XML business message standards also be integrated into the SAP message types.
And if so, how i can implement this in my SAP system (OSS-Notes or Patches)?

I hope anawhere can help me.

Regards
Awe