Created PO with the credit line but while receiving the discounted values is also included.

Businesses are facing a major issue with the invoice submitted by the supplier through a portal. The buyer has created a PO with the credit line / Discount applied to the line. But while receiving the user is not able to see the discounted value hence the user creates the receipt for the full ordered amount. The supplier is also creating an invoice for the same ordered amount rather than the discounted value. When the invoice is processed by the finance team they are unable to validate the invoice because of a mismatched value available in the header while