How much manual review should an order-conversion tool keep?

I built Gugu OrderFlow for small B2B suppliers who still retype purchase orders from photos, PDFs, Excel, or CSV.

The tool creates an editable sales-order draft instead of silently sending data into an ERP. Users review customer, item, quantity, and price fields before exporting Excel or UTF-8 CSV.

For people who handle real customer orders: which fields must always require human confirmation, and which ones would you trust to be accepted automatically?