A Huge problem when using the MWS system, when someone has stores in multiple marketplaces, is the fact that a lot of the amazon Api’s and reports lack this important information, which is a major omission and create a lot of headaches when using software to manage operations.
for instance, the list ListInboundShipmentItems api does not include marketplace info, so how should a seller with stores in Usa and in Canada and mexico design his software to know to which marketplace to assign this fba shipment record.
we used to use the country code from the ship from address, it used to work, till we saw that sometimes we make a shipment straight from china, country code CN. here goes our logic out of the window. ANY IDEA. the api also does not have the ship to address. so maybe a solution is to build a table with the amazon centers and correlate them. Alas, there is no such information available. maybe amazon has a secret pact with my developer and he pays them commission