EcmsSstCertsRequired
Example
{
	"code": "EcmsSstCertsRequired",
	"target": "Unknown",
	"details": [
		{
			"code": "EcmsSstCertsRequired",
			"number": 1223,
			"message": "EcmsSstCertsRequired's value should be set to true.",
			"description": "Exemption certificates must be provided due to compliance to Streamlined Sales Tax rules.",
			"faultCode": "Client",
			"helpLink": "http://developer.avalara.com/avatax/errors/EcmsSstCertsRequired",
			"severity": "Error"
		}
	]
}
Explanation

As part of compliance with the Streamlined Sales Tax program rules, the EcmsSstCertsRequired field must be set to true. Check the request for this field and set it to true.