Cannot generate video with specific voices

Hello,

I'm facing an issue when trying to generate a video using the endpoint https://api.heygen.com/v2/video/generate.

The request consistently returns the following error for a specific voice_id:

{
  "error": {
    "code": "TTS_TOO_MANY_REQUEST_ERR",
    "detail": "Voice engine VoiceProvider.ELEVENLABS is not supported for voice 289430c137354573a3ab773c91f05094",
    "message": "Voice engine VoiceProvider.ELEVENLABS is not supported for voice 289430c137354573a3ab773c91f05094"
  }
}

I checked the documentation at https://docs.heygen.com/reference/errors and, assuming it might be a temporary rate limit, I waited a day before trying again, but the issue persists.

This voice_id (289430c137354573a3ab773c91f05094) was working fine two days ago.

The video generation success is inconsistent; sometimes, using a different voice_id allows the video to be created, and sometimes it doesn't.

Thank you for your help.