45310: Participant Not Found

This error means Flex couldn't find the participant you tried to manage in a live meeting or conference-based call. Flex can only act on active participants in an in-progress conference. If the participant's call ended, the conference ended, or the call was modified to use new TwiML, the participant is no longer available for participant actions.

• The participant disconnected or was removed from the live call before Flex completed the action.
• The conference ended and no longer has any active participants to manage.
• The call was modified to use new TwiML, so the original participant is no longer part of the active conference state.
• The action was attempted after the call stopped meeting the live conference-based requirements used by features such as warm transfer or call monitoring.

• Confirm that the interaction is still live and conference-based, then retry the action against the current participant state.
• If you are using warm transfer, make sure the call is live, you are not on hold, and another transfer is not already in progress.
• If the participant already left the call, start a new consult or monitoring session, or add the participant back to the active call if needed.
• Review the Flex Status Report or Twilio Debugger for more detail about the failure. If the issue continues, run System checkup in Console to identify Flex configuration issues.

• Warm transfer
• Monitor agent activity
• Conferences Participants subresource