Error Code and Warning Dictionary

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 you supplied was not...
Mon, 5 May, 2025 at 6:23 AM
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 in your account. These settings exist to...
Mon, 5 May, 2025 at 6:23 AM
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 number. It is likely that the number t...
Mon, 5 May, 2025 at 6:25 AM
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 The To number you provided ...
Mon, 5 May, 2025 at 6:26 AM
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 of phone numbers that you own ...
Mon, 5 May, 2025 at 6:27 AM
30002: Message failed: your account is currently suspended.
ERROR: 30002 Description This message failed because your account was suspended after this message was queued but before it was sent by Lea...
Mon, 5 May, 2025 at 6:28 AM
30003: Number unreachable or out of service.
ERROR: 30003 Description The destination handset you are trying to reach is switched off or otherwise unavailable. Possible Causes The...
Mon, 5 May, 2025 at 6:29 AM
30004: Recipient has opted out or has DND enabled.
ERROR: 30004 Possible Causes The destination number you are trying to reach is blocked from receiving this message. The device you are trying to reach ...
Mon, 5 May, 2025 at 8:35 AM
30005: The recipient’s number is inactive or does not exist.
ERROR: 30005 Possible Causes The destination number you are trying to reach is unknown and may no longer exist. The device you are trying to re...
Mon, 5 May, 2025 at 6:30 AM
30006: Landline or unreachable carrier
ERROR: 30006 Description Message Delivery - Landline or unreachable carrier The destination number is unable to receive this message. ...
Mon, 5 May, 2025 at 6:31 AM