InvalidIPAddress
Example
{
	"code": "InvalidIPAddress",
	"target": "Unknown",
	"details": [
		{
			"code": "InvalidIPAddress",
			"number": 609,
			"message": "The IP Address of the machine is not whitelisted to use this API.",
			"description": "You have attempted to contact an API that is available to specially invited partners and developers only.",
			"faultCode": "Client",
			"helpLink": "http://developer.avalara.com/avatax/errors/InvalidIPAddress",
			"severity": "Error"
		}
	]
}
Explanation

This indicates that the IP address of your machine has not been approved. Please contact your business development manager to request that your IP address be approved for use with this invitation-only API.