ERROR: 21661

Description


Phone numbers must be SMS-capable. Visit the phone numbers page of your account to view a list of phone numbers that you own and to determine whether they are SMS-capable.



Possible Causes


The number you are using is not capable of sending messages.



Possible Solutions

  • Check that you are using a Lead Connector phone number with SMS capabilities. You can see your purchased phone numbers and their capabilities in Settings > Phone Numbers > Manage Number > +Add Number.
  • Purchase an SMS capable number from Settings > Phone Numbers > Manage Number > +Add Number.