Update Billed Amount in Purchase Order Without Purchase Order Item (Items) in Data Import?

ERPNext
,
1

I am currently importing purchase invoices using the following fields:

  • ID
  • Series
  • Supplier
  • Date
  • Department
  • Cost Center
  • Project
  • ID (Items)
  • Item Name (Items)
  • Accepted Qty (Items)
  • UOM (Items)
  • Rate (Items)
  • Department (Items)
  • Project (Items)
  • Cost Center (Items)
  • Item (Items)
  • Purchase Order (Items)
  • Purchase Order Item (Items)

If I do not pass the Purchase Order Item (Items), the Billed Amount is not getting updated in the Purchase Order.

Is there any way to upload a purchase invoice without the Purchase Order Item (Items) column and still have the Billed Amount updated?

Thank you!

2

Does a purchase order exist for the invoices you are importing?

If purchase order exists, why not create invoices from the list of
purchase orders. If purchase order does not exist what happens if you
leave both (purchase order and purchase order item) fields blank?