Your message was rejected by DLT (India’s Distributed Ledger Technology for commercial SMS) – for example the template, TM ID, PE ID, or Sender ID does not match what is registered on DLT for this content or sender. The message was not sent.
What you can do: Ensure your template, TM ID, PE ID, and Sender ID are registered on DLT and match exactly what you are sending. Fix any mismatch and resend.