Quantity field not supported on Tax Inclusive calls

Error Description

The Quantity field (qty) can’t be included on the line item (itms) if Tax Inclusive (incl) is set to true.

Example

{
  "err": [
    {
      "code": -74,
      "msg": "Quantity field not supported on Tax Inclusive calls"
    }
  ]
}

How to Resolve

Remove the Quantity field (qty) from the line item (itms) when running a Tax Inclusive (incl = true) line item (itms).

For more information, see Quantity and Tax Inclusive.