Error code 30034 on Twilio signifies that a message was blocked because it originated from an unregistered US A2P 10DLC number.
What is Error Code 30034?
When you encounter Twilio error code 30034, it means that the message you attempted to send via a +1 10DLC (10-Digit Long Code) was not delivered. The specific accompanying error message is typically "US A2P 10DLC - Message from an Unregistered Number." This error is a direct consequence of new regulations governing Application-to-Person (A2P) messaging in the United States.
Why Does It Happen?
The error arises due to the US A2P 10DLC messaging framework. To ensure legitimate and compliant business messaging, U.S. mobile carriers require businesses to register their brand and their messaging campaigns for all A2P traffic sent over 10-digit long codes (+1 numbers). If a number is used to send A2P messages without proper registration, carriers and Twilio will block the messages.
Impact of Error 30034
The implications of receiving error code 30034 are twofold:
- Message Blocking: All messages sent from the unregistered number will be blocked and will not reach their intended recipients.
- Billing: Even though the messages are blocked and fail to deliver, standard Twilio messaging rates will still apply. This means you will be charged for attempts to send messages that ultimately do not go through.
Solutions and Prevention
To avoid error code 30034 and ensure your messages are successfully delivered, it is critical to comply with US A2P 10DLC registration requirements. This involves registering your brand, your messaging campaigns, and linking your 10DLC numbers.
Here are the essential steps to resolve and prevent this error:
- Brand Registration: Register your business or organization as a brand through the Twilio Console. This is the foundational step for all A2P 10DLC messaging.
- Campaign Registration: Once your brand is registered, create and register specific messaging campaigns. These campaigns describe the type of messages you will send (e.g., transactional alerts, marketing promotions, one-time passwords) and help ensure carrier approval for your specific use cases.
- Number Linking: After your campaigns are approved, link your +1 10DLC phone numbers to these registered campaigns within your Twilio account. This associates your sending numbers with your approved messaging intentions.
- Proactive Compliance: Begin the registration process as soon as possible, as it is a mandatory step for sending A2P messages over 10DLC in the United States.
Summary of Error 30034
| Error Code | Description | Cause | Impact | Resolution / Prevention |
|---|---|---|---|---|
| 30034 | US A2P 10DLC - Message from an Unregistered Number | Messages sent from a +1 10DLC number without proper A2P registration. | Messages are blocked; Twilio messaging rates still apply. | Register your brand, campaigns, and 10DLC numbers via the Twilio Console. |
