We often need to add a PO number after an invoice has been posted as the customer needs it to be able to pay. At one point there used to be a box in the middle of the invoice card where this could be done, but when some settings were changed this disappeared and we've been unable to get it back. Also, when using the path Transactions/Sales/Edit Transaction Information we have been able to add a PO number, but it is not then visible on the transaction and doesn't appear on the reprinted invoice (but is still there when we go back in using the path above).
Can anyone make a suggestion as to what settings we need to change to get the box back? Or what we need to do to get the PO number to appear on the invoice via the other route?
Many thanks
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