13619: Record: Transcription feature not available for this type of recording.

Use transcription only with Voice recording flows that support it. This warning appears when you request transcription for a recording type that does not support transcription. Twilio generates transcription from call recordings created with TwiML <Record> and transcribe="true".

• You requested transcription for a recording type that does not support transcription.
• The recording was not created with the TwiML <Record> flow that supports transcription.

• Check the TwiML or API docs for the recording type you are using and confirm that transcription is supported before you set transcription attributes.
• Use TwiML <Record> with transcribe="true" for recordings that support transcription.

• TwiML Voice: <Record>
• Transcriptions resource