Source note · Troubleshooting business SMS that is not delivered
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.
Checked 2026-10-02
Twilio blocks messages to U.S. numbers when you send from a +1 10DLC number that is not associated with an approved A2P 10DLC Campaign.
- Vendor
- Twilio
- Product
- Twilio Programmable Messaging
- Subsystem
- A2P 10DLC
- Deployment
- multi-tenant
- Region
- us
- Release range
- current as of 2026-10-02
- Checked
- 2026-10-02
Sources
- 30034: US A2P 10DLC - Message from an Unregistered Number — Twilio · tier 2 current vendor documentation · opening definition
Cite this note
APA
WarmTransfer. (2026, October 2). Troubleshooting business SMS that is not delivered: source note business-sms-delivery-troubleshooting-err-30034-unregistered. WarmTransfer. https://warmtransfer.net/knowledge/claims/business-sms-delivery-troubleshooting-err-30034-unregistered
BibTeX
@misc{warmtransfer-claim-business-sms-delivery-troubleshooting-err-30034-unregistered,
title = {Troubleshooting business SMS that is not delivered: source note business-sms-delivery-troubleshooting-err-30034-unregistered},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/business-sms-delivery-troubleshooting-err-30034-unregistered},
note = {Source note business-sms-delivery-troubleshooting-err-30034-unregistered, checked 2026-10-02}
}