my client’s outbound campaign stopped running as of yesterday. We’re using Voicerr (which connects through Retell Vapi), and according to their team, calls are not being attempted due to a failure on the Retell/Vapi side. They mentioned that the issue can be seen in the logs, but I’m not sure where to locate the specific call failure reasons within Vapi. Could you please: 1. Confirm where in Vapi I can find detailed call failure logs or reasons for the failed call attempts, 2. Verify whether the issue has already been resolved, and 3. Let me know if any action is needed from my end to restore normal campaign operation? This issue has halted the client’s campaign entirely, so any help or status update would be greatly appreciated. Assistant id: 34e0c19f-929f-4e64-afdc-1c71cf936e25 OrgID: a33e570f-a485-467b-ac40-459b31eca4d0Orgid:

Hi there, I can help troubleshoot this issue. To get to the root cause, could you confirm if you have access to the VAPI call logs for the failed attempts? Once I can see the detailed error messages, I can guide you on whether any action is needed on your end or if it’s fully on Retell/VAPI’s side. We can also check if the issue has been resolved so your campaign can resume smoothly. @Winnie

@Vercel Hi there. I do see a VAPI call log, but I don't see failed attempted, it's showing that the last call went out Oct 29th. Can you also confirm whether I have standard “Vapi” account or a “Retell Vapi”?

Hi Winnie, If you're encountering issues with outbound call campaigns, here are some steps to help troubleshoot: 1. **Check Call Setup**: Ensure that you've set the campaign name, type, and uploaded recipient list in the correct CSV format with the required

number

column in E.164 format. More details can be found in the [Outbound Campaigns overview](https://docs.vapi.ai/outbound-campaigns/overview). 2. **Inspect Analytics**: Utilize the Campaign Dashboard to monitor the status, completed calls, pick-up rate, and any occurring end reasons. If specific calls are failing, check the detailed call reports provided. 3. **Concurrency Limits**: Verify your Vapi organization's concurrency limit. Only a defined number of calls can be executed simultaneously; the rest are queued. If you're hitting limits, you may need to increase your org concurrency limit. 4. **Check for End Reasons**: Review

endedReason

codes in the call logs to understand why calls ended. This can guide you in resolving both campaign and configuration issues. Reference the [Call Ended Reasons](https://docs.vapi.ai/calls/call-ended-reason) document for interpreting these codes. 5. **Telephony Configuration**: Ensure correct telephony provider settings if using custom or third-party services like Twilio. Check for any provider-specific limitations that might affect call forwarding. These insights should guide you in some common troubleshooting areas. If you need deeper analysis or specific diagnostics, reviewing recent call logs and configurations thoroughly is recommended.