Description:    "The request was made over a plain HTTP connection. A TLS connection is required.",
		HTTPStatusCode: http.StatusBadRequest,
	},
	ErrSTSInvalidClientCertificate: {
		Code:           "InvalidClientCertificate",
		Description:    "The provided client certificate is invalid. Retry with a different certificate.",
		HTTPStatusCode: http.StatusBadRequest,
	},
	ErrSTSNotInitialized: {
		Code:           "STSNotInitialized",