One single interface for two receiver systems with different target structure

Hi experts,

I have a custom interface which converts incoming XML file to ASN IDOC in ECC.

Now using the same source XML file depending on the value of one of the fields in the source XML file,I need to create an XML message in another system(SNC) for the same document(ASN).

Can someone please provide me some pointers/steps as to how this is possible...Multi-mapping?Multiple receiver determination?

Thanks.