HI Jurgen,
Thanks for the mail, the requirement is to derive the tax jurisdiction code from the vendor master whenever the same plant procures from vendors belonging to different regions within the same country code.
This is not an STO scenario. The process is that the same plant procures from a vendor having jurisdiction code x and another vendor y. Since we have the same plant in PO, the jurisdiction code is derived from the plant which is x. The requirement is that if the second vendor is used in PO, the jurisdiction code in PO should be y rather than x.
Hope this gives more clarity on the requirement. Please add your comments.
regards,
akash