Symptom
When sending outbound SMS, I received delivery receipt error code 4.
Applies To
- Outbound SMS
- Delivery Receipts (DLRs)
- Error Code 4
Resolution
Delivery receipt error code 4 Call Barred by User is a permanent error. The number should be removed from the client's database.
If the end user wants to receive SMS, they should contact the network operator directly to resolve this issue.
Additional Information
For more information see, What happens when you send SMS to a barred number?
Articles in this section
- Adding a New Line in SMS Using Vonage REST API
- What is the minimum/maximum of a Sender ID length?
- What are some best practices for sending social invites through SMS?
- How to Avoid Outbound SMS Rejection
- Message Delivery Failed Error 10 Invalid Message
- Error 8 Network Error
- Vonage SMS Delivery Error Codes and Descriptions
- DLR Error Code 99 General Error
- DLR Error Code 9 Illegal Number
- DLR Error Code 3 Absent Subscriber Permanent