Error 21704
Product: Programmable SMS
ERROR - 21704
The Messaging Service contains no phone numbers
## Error - 21704
The Messaging Service contains no senders.
A Messaging Service requires at least one phone number, Alphanumeric Sender ID or short code to send messages.
Possible Causes
- Your Messaging Service does not contain any senders
Possible Solutions
- Add at least one phone number or short code to your Messaging Service, or enable Alphanumeric Sender ID.