VersionTooOld
Example
{
	"code": "VersionTooOld",
	"target": "Unknown",
	"details": [
		{
			"code": "VersionTooOld",
			"number": 2601,
			"message": "Version Too Old.",
			"description": "The API version you passed in the request is no longer supported. Please provide a supported API version.",
			"faultCode": "Client",
			"helpLink": "http://developer.avalara.com/avatax/errors/VersionTooOld",
			"severity": "Error"
		}
	]
}
Explanation

This indicates that the version requested is no longer supported.