---
page_type: error
code: 13240
message: "13240: Dial->Conference: Invalid Whisper SID"
level: ERROR
product: Programmable Voice
---

## Error - 13240

### Dial->Conference: Invalid Whisper SID

The call SID specified by the whisper parameter is invalid. This may because the specified call is no longer connected to the conference. Validate that this call is connecting to the correct conference and the call SID specified is also in the conference.