Quantity -5 is invalid. The value cannot be negative.

Error Description

Quantity (qty) on a line item (itms) must be a positive value.

Example

{  "err": [      {        "code": -1,        "msg": "Quantity -5 is invalid.  The value cannot be negative."      }  ]}

How to Resolve

Ensure that Quantity (qty) is set to a positive value.