Common Retell errors
What you'll achieve
Fix the most common voice problems.
Step by step
| Symptom | What to do |
|---|---|
| Retell rejected the selected voice credential. | The key is invalid or was revoked. Create a new credential in Credentials and choose it under Voice. |
| Voice agents shows Locked | The voice credential or the verified line is missing. |
| Provisioning didn't finish | Retry or wait a few minutes. |
| The campaign is Paused · no credit | Retell ran out of credit. Top up and click Resume. See Balance alerts. |
| Calls with reason No voice integration | The workspace's voice configuration is missing. |
| Calls with reason Provider error | Retry with Retry failed; if it happens again, ask for support. |
| No Retell agents configured when launching a prospection | Activate the agents in AI connections → Voice agents. |
Why a call ended
The lead shows the disconnection reason: Voicemail, Reached an IVR, Busy, Declined the call, Marked as spam, Could not dial, Invalid number, The prospect hung up, The agent ended the call, Answering machine, Max duration reached or Inactivity.
How to verify it worked
Provider status shows Retell Funded and new calls go out without failures.