One or more other errors occurred during multiple participants creation. This error is received in Error logs in Twilio Console and contains the list of other errors.
The error during multiple participants creation is unexpected due to extensive validation done before conversation with multiple participants creation. The error may appear if there are simultaneous conflicting requests. To learn more about the possible issues that happened during participants creation read the description of the received error in Twilio Console Error Logs and check the errors. The Possible Causes of these errors caused the failure of the whole participants creation process.
It's recommended to retry the request after some time. In case of this error the failed conversation is moved to closed state and all the resources occupied by this conversation are released, that allows retry not to fail.