PO Suggestion Entry - Defaults

I have a requirement to default the ShipTo address based off the Supplier country when creating a PO. I am able to get it to work fine with custom code from PO Entry. However, majority of our POs are from PO Suggestion. When creating a PO from there, does it hit ttPOHeader temp table before it creates the PO or does it go directly into the POHeader table? Trying to see if I can use an In-Transaction BPM to change the ShipTo default depending on the country of the supplier.

A BPM can do this for you. PO Suggestions would require a Data Directive.

Thanks got it to work with data directive.