As per my understanding both Poland & Finland are part of EU for most of the common multinational European organizations and agreements.
Following queries are out of my curioucity of learning.
Can share what is that
certain tax problems
between Poland & Finland
And why your client want to go for
cross company consignment process
Instead of cross company sales or inter-company stock transfer.
Is this something related to APO? Like http://help.sap.com/saphelp_470/helpdata/en/d1/ddde81bedf11d4b579006094b9b9dd/frameset.htm
Can you tell us the client industry?
In anticipation.
Thanks & Regards, JP