What does "PO location does not match GLN/DUNS" mean?

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I received an error message in my WebForms inbox from Walmart that says "PO location does not match GLN/DUNS" What does that mean and how can I fix this problem?
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Posted 7 years ago

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Andrew Richner

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This is an error generated in Walmart's system (this could be Walmart USA, Walmart Canada, or Sam's Club) regarding an issue with the ship-to address you have sent to them recently on the Header of an Invoice EDI document. This invoice has been rejected.

In order for Walmart to be able to accept an invoice, the invoice must have a correct GLN (Global Location Number), DUNs (Duns and Bradstreet) or Duns+4 number in the Ship To information on the Header tab in WebForms. This information may or may not have been sent to you on the original Purchase Order and should match the location number that Walmart has in their system.
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Amber Lohner

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Is there anything to do to fix this issue or prevent it for the future?