Is it possible to display PO number on invoice header for b2b invoices

Summary:

Hi, We have a punchout supplier who sends cXML invoices through b2b. Our client has got a requirement to populate the PO number on the invoice header itself (like how we input Identifying PO number manually when a manual invoice is created). We don't see any field/anything related to PO number on the transformed file, so wanted to check if we have any options here.

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24A

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