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Capturing data and surfacing it for investigation is critical for diagnosing any issues with your deliverability. In order to surface that information more conveniently, all error codes returned by Twilio that were not previously mapped to an SMS Event will now be mapped to the SMS Blocked Event. For example, if Twilio returns error codes 30024 or 30034, these will now be mapped to the SMS Blocked Event. This means that if you are capturing this information in your Exports or Insights, then you will see the Twilio errors in the SMS Blocked Event. It also means this information will be surfaced in your Customer Trail.
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