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SIP response code 412

  • Article
  • Applies to:
    Microsoft Teams

This article provides troubleshooting information for the combination of the SIP 412 error and Microsoft response code 510412.

510412 412 Get Flighting - wrong callee MRI

  • Microsoft response code: 510412
  • SIP response code: 412
  • Suggested actions:
    • To fix the number parsing error, correct the malformed callee number in the inbound call. This will enable creating a correct Messaging Resource Identifier (MRI) that's required for further processing of the call.