InvalidRequestContentType
Example
{
	"code": "InvalidRequestContentType",
	"target": "Unknown",
	"details": [
		{
			"code": "InvalidRequestContentType",
			"number": 1217,
			"message": "The request content type is invalid.",
			"description": "The request content type must be either 'multipart/form-data' or empty string.",
			"faultCode": "Client",
			"helpLink": "http://developer.avalara.com/avatax/errors/InvalidRequestContentType",
			"severity": "Error"
		}
	]
}
Explanation

This error indicates that an invalid request content type was included in the request. The request content type must be either ‘multipart/form-data’ or an empty string.