UnsupportedFileFormat
Example
{
	"code": "UnsupportedFileFormat",
	"target": "Unknown",
	"details": [
		{
			"code": "UnsupportedFileFormat",
			"number": 1800,
			"message": "The requested output file format -0- is invalid.",
			"description": "The requested output file format must either be DMA or STANDARD csv file.",
			"faultCode": "Client",
			"helpLink": "http://developer.avalara.com/avatax/errors/UnsupportedFileFormat",
			"severity": "Error"
		}
	]
}
Explanation

This indicates that you specified an invalid output file format. The requested output file format must either be DMA or STANDARD csv file.