What error code will I see if my TFN messages are rejected as spam?

Toll-Free numbers that are Verified will receive Sinch error code 255 if messages are blocked for SPAM.

Unverified TFNs or Pending Verification TFNs are blocked from sending messages and will receive error code 64 "Unverified Toll-Free Number" (for more info see TFN messaging limits).

Please see Toll-Free delivery report errors on the Sinch Developer site for a complete list of Toll-Free specific error codes.
 

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