Commercial Discount

On the invoice line:

scenario 1 : you can mention a the line net price (no indication of commercial discount)
scenario 2 : you can include the line discount information as a percentage. (if customer wants to know the discount details)

Input information in the API Json body

Property	Sample Value	Info
ReductionPercentage	25	Discount percentage

Example:

{
 "OrderType": "Invoice",
 "OrderDirection": "Income",
 "OrderNumber": "QS-50001",
 "OrderDate": "2025-09-15",
 "ExpiryDate": "2025-10-30",
  "Customer": {
   "Name": "Customer Name",
   "VATNumber": "BE0759529999",
   "PartyType": "Customer",
   "Addresses": [
        {
        "AddressType": "InvoiceAddress",
        "Name": "Customer Name",
        "Street": "Oktrooiplein",
        "StreetNumber": "1",
        "City": "Ghent",
        "Zip": "9000",
        "CountryCode": "BE"
        },
   ]
   },
  "OrderLines": [
            {
              "Quantity": 14,
              "UnitPriceExcl": 2.23,
              "Description": "my order line1",
              "ReductionPercentage": 25,  // % commercial discount
              "VATPercentage": 21.0
            }
            ],
}

Below an example how it will be included in the UBL when it is sent via Open/Peppol (Allowance on line level) :

Specific fields in the UBL:

Property	Sample Value	Info
1	ChargeIndicator	false : it is a discount
2	AllowanceChargeReason	fixed text set by Billit : allowance
3	Amount	Total amount of the line discount, calculated by Billit based on ReductionPercentage