If you want to send and receive SMS in Voximplant, you have to make sure that SMS functionality is supported for the chosen region and phone category when purchasing a phone number. Note that virtual numbers don’t support this functionality.
If you don’t see this message, the number supports SMS functionality:
HTTP API request
You can also check which numbers support SMS by sending an HTTP request with country_code and phone_category_name. If the is_sms_supported property is equal to true in the objects returned by the GetPhoneNumbers HTTP API request, the functionality is supported for phone numbers in the region.