Product: Programmable Voice
The participant label specified as an attribute on the conference noun in twiml is already in use by another active participant in the same conference.
- The same static twiml specifying a participant label was served to two difference calls
- Dynamically generated twiml specified the same participant label for two different calls
- The participant label specified in the twiml Is the same as one specified for an outbound participant that was already added to the conference using the Twilio API
Use a label value which uniquely identifies this participant within the conference