Calculate VAT based on ship from on the internal transfers or global procurement SCFO flows

Summary: For shipments happening between inventory orgs tied to different entities/BU's, client requires that the ship from (in the case of direct supplier shipments) is taken into account for tax calculation on the intercompany invoices. On the sales orders or transfer orders, there is no standard ship from location (only the ship from org exists) unlike the PO's which has a ship-to location. Due to this, the tax calculated on the resulting intercompany transactions is incorrect. How do we ensure that the tax engine looks at the ship from for these transactions, not just ship to?

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