"code": "NoDefaultCompany",
	"target": "Unknown",
	"details": [
			"code": "NoDefaultCompany",
			"number": 27,
			"message": "Your account does not have a default company.",
			"description": "Please create a company within your account and mark it as the default company, then retry your API call.",
			"faultCode": "Client",
			"helpLink": "",
			"severity": "Error"

The API you called requires that your account have a default company configured. To configure a default company, please visit the AvaTax administration website as follows:

The administration website allows you to configure your company and begin using the AvaTax API.