30034: US A2P 10DLC - Message from an Unregistered Number

Publisher

Twilio

URL

https://www.twilio.com/docs/api/errors/30034

Published

2026-04-21

Updated

unknown

Accessed

2026-10-02

HTTP status

200

License

Twilio website terms; proprietary; no-redistribution; short excerpts and locators only

Source notes citing this source

• Twilio lists more than one 10DLC number on a Sole Proprietor Campaign as a cause of 30034; a Sole Proprietor Campaign permits only one 10DLC number. in context
• Twilio blocks messages to US numbers sent from a +1 10DLC number that is not associated with an approved A2P 10DLC Campaign, returning error 30034. in context
• When a Twilio US 10DLC send fails with 30034 rather than 30007, the first check is registration and sender-pool association, not message content, because 30034 is defined by campaign association and 30007 by filtering. inferred in context
• Error 30034 also occurs when the sending number is not in the Sender Pool of the Messaging Service linked to the approved Campaign. in context
• Twilio blocks messages to US numbers sent from a +1 10DLC number not associated with an approved A2P 10DLC Campaign, logging error 30034. in context
• Only one +1 10DLC number can be registered to a Sole Proprietor Campaign; additional numbers in its Messaging Service stay unregistered and are blocked with error 30034. in context

Cite this source record

APA

WarmTransfer. (2026, April 21). 30034: US A2P 10DLC - Message from an Unregistered Number. WarmTransfer. https://warmtransfer.net/knowledge/sources/twilio-err-30034-unregistered-10dlc

BibTeX

@misc{warmtransfer-twilio-err-30034-unregistered-10dlc,
  title  = {30034: US A2P 10DLC - Message from an Unregistered Number},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/sources/twilio-err-30034-unregistered-10dlc},
  note   = {Twilio, accessed 2026-10-02}
}