The Item Reference No field in the Purchase Order should first look to default from the Vendor Item No field in the Item Card or the Stock Keeping Unit Card, if the default Vendor No (and/or Location) matches the PO, and then if there is not a match, look at the Item References or Vendor Item Catalog for appropriate matches.
Comments
I agree completely. We are just implementing a secondary vendor and neither order planning or the purchase order will look to see if there is an item reference based on the vendor on the PO. So it defaults to what is on the item card - leaving it to the buyer to manually add an item reference so it can change the purchasing unit of measure. This seems like a big oversight. We are going to have an extension created by our partners because BC does not do this automatically.
Category: Purchasing

Business Central Team (administrator)
Thank you for this suggestion! Currently this is not on our roadmap. We are tracking this idea and if it gathers more votes and comments we will consider it in the future. Best regards, Business Central Team