Invalid Sender Rejection

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

SMPP API  - Rejection code 10  - "Source Address - Submission Control Failure"  

REST API - Error code 15 - Illegal Sender

For messages to the US or Canada, the sender should be a virtual long number. If a different sender is submitted, the message will be rejected with the one of the errors above, depending which API is being used.

You can purchased numbers from within the Dashboard.

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