Changes to Get SMS settings

added the optional property issues to the response with the 401 status

added the optional property issues to the response with the 404 status

added the optional property issues to the response with the 500 status

added the optional property issues to the response with the 503 status

added the optional property sms/numbers/items/linkShorteningEnabled to the response with the 200 status

added the optional property retryable to the response with the 401 status

added the optional property retryable to the response with the 404 status

added the optional property retryable to the response with the 500 status

added the optional property retryable to the response with the 503 status

added the non-success response with the status 503

added the optional property code to the response with the 401 status

added the optional property code to the response with the 404 status

added the optional property code to the response with the 500 status

added the optional property sms/numbers/items/brandPrefix to the response with the 200 status

added the optional property sms/numbers/items/id to the response with the 200 status

added the optional property sms/numbers/items/label to the response with the 200 status

the response property success became optional for the status 401

the response property success became optional for the status 404

the response property success became optional for the status 500

endpoint added