> ## Documentation Index
> Fetch the complete documentation index at: https://docs.letmepost.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# facebook.media.image_video_exclusive

> A Facebook Page post is either images-only or video-only. No mixing.

## What it checks

`media` cannot contain both image and video items. Pages's `/photos` and `/videos` endpoints are mutually exclusive surfaces.

## Failure response

```json theme={"system"}
{
  "error": {
    "code": "preflight_failed",
    "rule": "facebook.media.image_video_exclusive",
    "platform": "facebook",
    "message": "Cannot attach both images and video to the same Facebook post."
  }
}
```

## Remediation

Split into two posts.