To include the PO number in the Item Fulfillment email:
1. Go to Setup > Accounting > Customize Fulfillment Email.
2. In the Customization column add the info below:<%=getCurrentAttribute('salesorder','otherrefnum')%>
3. Click Save.
Note: If a syntax error appears, make sure to use the apostrophe ' symbol in the getCurrentAttribute tag because the symbol changes to a grave accent ` if it is copied over.
-The Internal ID otherrefnum, pertains to the PO# field under the Primary Information section of the Sales Order. Information on that field is not automatically generated and needs to be entered manually. It is different from the Purchase Order number in the Line Item under the Create PO column which is automatically generated.