Description


Delivery to this destination has been temporarily restricted because the built-in fraud detection system identified the traffic to this number as potentially suspicious.



Possible Causes

  • Carrier's fraud detection system identified unusual traffic patterns for this destination or detected activity similar to known malicious behavior.
  • As a precaution, Carriers temporarily blocked SMS traffic to the destination while the fraud check was active.
  • In some cases, a legitimate recipient may be incorrectly flagged. Although Carrier works to minimize such false positives, they can still occur.



Possible Solutions


  • Wait a few hours and try the message again. In many cases, the block is temporary and clears if carrier does not detect additional suspicious activity.

  • If the traffic is legitimate and the issue continues, collect at least three affected Message SIDs from the last 24 hours in your SMS logs and open a support request for investigation.

  • If you need to send a known legitimate message without applying this risk check, set RiskCheck to disable when you create the Message resource.

  • Add trusted destination phone numbers or eligible 1k prefixes to the Global Safe List. This prevents the Carrier fraud detection platform from blocking them later.