Quantity field not supported on pro-rated tax calls

Error Description

The Quantity field (qty) can’t be included on the line item (itms) if Proration (pror) is set..

Example

{  "err": [    {      "code": -75,      "msg": "Quantity field not supported on pro-rated tax calls"    }  ]}

How to Resolve

Remove the Quantity field (qty) from the line item (itms) when running a Prorated (pror has a value set) line item (itms).

For more information, see Quantity and Proration.