We encountered an error for some of our calls - Ended: Call.in progress.error vapifault worker not available. Could you let us know what that means? Is there a way to avoid or handle it? Example Call ID: 019b0760-f611-733f-a224-a642c2eb1a17

The error

call.in-progress.error-vapifault-worker-not-available

means there was a failure in the processing pipeline—often due to a backend worker or service being temporarily unavailable. To troubleshoot, review your call logs in the Vapi dashboard for more details, and if the issue persists, contact Vapi support with your call ID and account email for further investigation. Example:

text
Call ended reason: call.in-progress.error-vapifault-worker-not-available
Action: Check call logs → If unresolved, contact support with call ID.

For more details, see the [call ended reason documentation](https://docs.vapi.ai/calls/call-ended-reason). Source: - [Call ended reason documentation](https://docs.vapi.ai/calls/call-ended-reason)

Hi Dmytro, Thanks for providing the call ID — that was very helpful. The call worker not available error is extremely rare and typically caused by a brief, transient backend condition. It shouldn’t happen again going forward. That said, if you do see this error recur or notice any similar behavior, please let us know right away and we’ll take a closer look. Thanks again for flagging this, and we appreciate your patience. Best regards, Kyle Vapi Support

Thanks for your reply