21211: Invalid ‘To’ Phone Number
ERROR: 21211 Description You attempted to initiate an outbound phone call or send a message, but the To phone number...
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Error Code And Warning Dictionary
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21408: Your account is not allowed to send SMS to this country or region.
ERROR: 21408 Description You have attempted to send an SMS or MMS to a region that has not been enabled... -
21614: ‘To’ number is not a valid mobile number
ERROR: 21614 Description You have attempted to send a SMS with a ‘To’ number that is not a valid mobile... -
21635: The “To” number is a landline and cannot receive SMS.
ERROR: 21635 Description You have attempted to send an SMS with a To number that is a landline. Possible Causes... -
21661: ‘From’ number is not SMS-capable
ERROR: 21661 Description Phone numbers must be SMS-capable. Visit the phone numbers page of your account to view a list...
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