UsernameRequired
Example
{
	"code": "UsernameRequired",
	"target": "Unknown",
	"details": [
		{
			"code": "UsernameRequired",
			"number": 1409,
			"message": "A username is required.",
			"description": "A username is required.",
			"faultCode": "Client",
			"helpLink": "http://developer.avalara.com/avatax/errors/UsernameRequired",
			"severity": "Error"
		}
	]
}
Explanation

Please retry this API and provide a username with your request.