17515: Inconsistent participant types

Twilio can't create a new transcription when the request includes a type property for some participants but not for others. The type property must be either:

• Provided for every participant, or
• Omitted for all participants (so the transcription service applies the configuration defaults).

At least one participant object includes a type property, while another participant object omits it or sets it to null.

• Add a valid type value to every participant object in the request.
• Alternatively, remove the type property from all participant objects to allow the service to apply the default type.

• Specify participant information