Symptom

When sending SMS to the US or Canada, you receive Rejection Code 10 or Error Code 15.

Applies To

• Outbound SMS
• US
• Canada
• Illegal Sender

Resolution

For messages to the US or Canada, the Sender ID should be a US pre-approved long number, toll-free, 10 DLC, or short code that is associated with your Vonage account or API key.

Cause

The rejection may happen for either of below two cases:

1. You are not sending from either a US pre-approved long number, toll-free, 10 DLC, or short code.
2. The number you are sending from is not associated with your Vonage account or API key.

For each API, there is a different error code that indicates that the Sender ID is illegal or invalid for this message:

• SMPP API: Rejection Code 10 - Source Address - Submission Control Failure
• REST API: Error Code 15 - Illegal Sender

If a different Sender ID is submitted, the message will be rejected with one of these errors, depending on which API is being used.

Additional Information

For more information, see US SMS Features and Restrictions for details on the restrictions in this market.