Mapping for Order Split

Hello,

We have a requirement that we would receive IDocs from a third party and we would send them back.

But the condition is,if these ORDERS IDocs contain materials belonging to different distribution channel then IDoc has to be split in two (10 or 20 DC) having materials belonging to same DC.

So at the max,we can have 2 IDocs created for 1 IDoc.

How can we achieve this?

Regards,

Shweta