To quickly diagnose your call transfer failures, check the

endedReason

for a failed call using the Vapi API:

bash
curl -X GET "https://api.vapi.ai/call/{call_id}" \
  -H "Authorization: Bearer YOUR_API_KEY"

Replace

{call_id}

with a recent failed call's ID. This will show if the issue is with Vapi's configuration or your telephony provider. For next steps, review the

endedReason

value in the response and proceed accordingly as outlined in the [debug guide](https://docs.vapi.ai/phone-calling/in-call-control/transfer-calls/debug-forwarding-drops). Source: - [Debug call forwarding drops](https://docs.vapi.ai/phone-calling/in-call-control/transfer-calls/debug-forwarding-drops)

Hi, can you please share the call id for the issue you are facing?

Sorry, we fixed it and you also responded back through email. Thanks for the help!

Glad to hear that. Thank you