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SIP response code 402

  • Article
  • Applies to:
    Microsoft Teams

This article provides troubleshooting information for the combination of the SIP 402 error and Microsoft response code 560402.

560402 402 Payment required

  • Microsoft response code: 560402
  • SIP response code: 402
  • Suggested actions:

    • Review the tenant's call records that include CallEndSubReason = 560402. Look for trends in the called numbers, or a distribution of the failures by destination country or region. Patterns can be identified that would suggest a problem in a downstream PSTN carrier.

      Note: This error might be represented by a slightly different phrase that's associated with the response code.