Voice Error Codes Reference
Quick reference for Voice Session Summary (VSS) webhook error codes. For detailed explanations and troubleshooting guidance, see the Voice Error Codes Guide.
When You See These
Error codes appear in the Voice Session Summary (VSS) webhook after a voice session has ended or failed. These indicate problems during call execution, not API validation issues.
Error Codes
| Error Code | Description |
|---|---|
| -2001 | An internal error has occurred |
| -2002 | An internal connectivity error has occurred |
| -2003 | The call flow provided is invalid |
| -2004 | No coverage available for requested area |
| -2005 | Unable to synthesize text to speech |
| -2006 | Unable to download file for playback |
| -2007 | The validity period of the call flow request has expired |
| -2008 | The provided source MSISDN or caller ID is not whitelisted |
| -2009 | The scenario parameters provided is invalid |
| -2010 | The trunk capacity has been exceeded |
| -9999 | An unknown error has occurred |
Related Documentation
- Detailed guide: Voice Error Codes - Complete troubleshooting information
- API response codes: Voice Status Codes Reference
- Number Masking errors: Number Masking Error Codes
- VSS webhook: Voice Session Summary Webhook