The status/availability of the SMS service for the business. Possible values are: 

• 1: The business has the VETtrak SMS service set up correctly
• 0: SMS availability could not be determined due to an error (refer to Auth for details)
• -1: The business has no valid registration key for the VETtrak SMS service set up
• -2: The business has an SMS registration key but VETtrak could not verify it - there may be a problem with the registration key or VETtrak may have denied the business access to the VETtrak SMS service
• -3: The VETtrak SMS service is currently offline

public int SmsStatus;