EDI - multiple orders come in for a single PO how do I send 1 consolidated 855 back

Hi Everyone,

I have a requirement for the cross dock process there is 1 PO sent to the translator system and the translator system sends multiple IDoc's to SAP, that turn into multiple sale orders with the same PO number in SAP. The customer wants a single 855 order acknowledgement returned with all of the item details showing the if the item is accepted, rejected, back ordered...(BA00)...etc.

Is there a standard way in SAP to consolidate multiple sale orders with the same PO Number and return the order acknowledgement for the entire PO?

Would this be a custom requirement?

If so could you please let me know what would be involved to carry this out?

How complex would this logic be?

Also I am aware for the for Cross-Dock orders 856 (ASN) & 810 (Invoice) are required return documents but is the 855 usually a required returned document in this process?

Thanks

Varun