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API Integration Help - Avatar IV Talking Photo ID Not Found (Error: photar_not_found)

Hi awesome engineers at heygen - im loving your work! Your support team suggested I reach out to you here because she thought you might be able to solve my one last step to integrate HeyGen's API -
I created an Avatar IV video using a custom photo in your web interface
The video generated successfully and I received video ID: 577ff79a7c2a4d9d86f47014d74e4163
HeyGen team told me this ID could be used for API access in the popup
However, when using this ID as a talking_photo_id in the API, I get error: "photar_not_found"
Technical Details:
API Endpoint: POST /v2/video/generate
Request Structure:
Apply to daily-lesson...
}
Error Response: 404 - photar_not_found
Questions:
Is 577ff79a7c2a4d9d86f47014d74e4163 a video ID rather than a talking photo ID?
How can I find the actual talking_photo_id for my Avatar IV photo?
Is there an API endpoint to list my talking photos? (I tried /v2/talking_photo but got unclear results)
What's the correct API approach for generating new videos using an existing Avatar IV photo?
Account Context:
Using Avatar IV (photo-to-video) feature
Custom photo avatar named "Confident Claire"
Voice: "Confident Claire" (ID: 5c7a1e3f79f94aeda0e0e83f5096a515)
API Key: Working (verified with /v2/avatars endpoint)
Goal:
Automate video generation using my existing Avatar IV photo avatar via API calls.
Thank you for your technical guidance!
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HeyGen Assistant

it specifically says
can i pay extra to have a custom integration - the other options don't work for my use case -
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Mykha
• 5m ago
For questions about codes and APIs I would recommend you to contact our engineering team.
You can post it in our discussion page https://docs.heygen.com/discuss and you will get a response from our engineers.