Possible Status/Error Code Combinations for MDRs

Outbound MDRs

• 200/SENT - The message was sent off to the carrier for delivery.

• REJECTED Status Codes:

  • 900 / Carrier Disabled - This destination carrier is disabled on your account.

  • 800 / Carrier Blocked - The message was blocked by a mobile carrier.

  • 700 / Opt Out Filtered - The destination number has opted out of receiving messages using a STOP keyword.

  • 600 / Unregisterd Traffic - The source number is not registered to a campaign.

Inbound MDRs

In addition to the MDR response codes above, the below codes may be seen for Inbound MDRs.

• 200 / OK - We received a 200 OK from the inbound message endpoint.

• REJECTED Status Codes:

  • 400 / BAD REQUEST - The server cannot process the message due to a client error (invalid syntax). The message should not be resent without modification.

  • 404 / NOT FOUND - The server cannot find the requested resource.

  • 415 / UNSUPPORTED MEDIA TYPE - The server refuses to accept the message request because it is in an unsupported format.

  • 429 / TOO MANY REQUESTS - The user has sent too many requests in a given amount of time ("rate limiting").

  • 500 / INTERNAL SERVER ERROR - The server encountered an unexpected condition that prevented it from fulfilling the message request.

  • 504 / GATEWAY TIMEOUT - The server did not get a response in time from the upstream server in order to complete the message request.