Manufacturer discounts

When working with discounts provided by a 3rd party (for example, a manufacturer coupon), include a line with a negative amount. In this line, include the tax code for Coupons (third party) - OC030000.

Example

{
  "type": "SalesInvoice",
  "code": "ManufacturerDiscountTaxCode",
  "companyCode": "DEFAULT",
  "date": "2024-07-15",
  "customerCode": "TESTCUSTOMER",
  "addresses": {
    "singleLocation": {
      "line1": "100 Ravine Lane NE",
      "city": "Bainbridge Island",
      "region": "WA",
      "country": "US",
      "postalCode": "98110"
    }
  },
  "lines": [
    {
      "number": "1",
      "amount": 100,
      "taxCode": "P0000000"
    },
    {
      "number": "2",
      "amount": -10,
      "taxCode": "OC030000"
   }
  ]
}