We have a PO that has that has the incorrect Vendor Number on it. Is it possible to change the Vendor Number? We are trying to avoid the usual "delete and create a new one" solution because it is a fairly lengthy PO.

Purchase Orders version 8.1A 091029

Sure you can. Just make sure to do it in both the header and the detail screen.

I have changed it in the Header and in the Details tabs but when I post it, the following message pops up: "The primary vendor is not being used on this document. The primary vendor will be set to A106 (which is the incorrect vendor we are trying to change from)."

We have figured it out. Turned out we had to go through every line and change the vendor in the comment as well. Thanks!