The purchase order invoice document can be posted from two different forms; the first form is the purchase order form, and the second form is the vendor open invoices.
Open the vendor invoices form, this is a function introduced prior to Microsoft Dynamics 365 for Finance and Operations. This form is used also for non-purchase order invoices.
To post a purchase order invoice from the purchase order form, navigate to Accounts Payable | Purchase orders | All purchase orders, after choosing the required purchase order, then go to the INVOICE ribbon and navigate to GENERATE | Invoice. The following screenshot illustrates the Purchase order invoice path from Purchase order lines form:
In the vendor invoice form, the ...