Manage Discounts on Receipts by Lockbox

Summary:

Manage Discount on Receipt based on amount (not fixed) by Lockbox

Content (please ensure you mask any confidential information):

we need to manage an interface between a treasury system and oracle AR.
Specifically, the treasury system will send us daily receipts. Some of these may have discounts that are not dependent on the payment term but are discounts agreed with the customer.
So the treasury system will send us the receipts and for some of them also the amount of the discount.
Since they will be using Lockboxes, is there a way to apply the collection to the invoice and in the application id a discount amount as it happens from Form Receipt Application ? From the spreadsheet “ReceivableStandardReceiptImportTemplate I cannot find the Discount field.