> For the complete documentation index, see [llms.txt](https://docs.metahumansdk.io/service-apis-for-creating-virtual-avatars/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.metahumansdk.io/service-apis-for-creating-virtual-avatars/errors/3d-face-reconstruction.md).

# 3D Face Reconstruction

### 0. unregistered token

```json
{
  "error": {
    "code": 0,
    "message": "unregistered token"
  }
}
```

This error means that the service does not know of such a token.

[Get a token](/service-apis-for-creating-virtual-avatars/getting-started/getting-a-token.md), or if it has already been received, check it for typos.

### 1. fail authorization

```json
{
  "error": {
    "code": 1,
    "message": "fail authorization"
  }
}
```

Your access is limited. [Contact support](/service-apis-for-creating-virtual-avatars/welcome/about-us.md).

### 3. the file is too large

```json
{
  "error": {
    "code": 3,
    "message": "file must be less than 10mb"
  }
}
```

You are trying to send an image that is over the size limit. Compress your image.

### 4. face not found

```json
{
  "error": {
    "code": 4,
    "message": "face not found"
  }
}
```

No face found in photo.

If the face is really in the photo, then there are possible problems with the image:

* bad image quality
* face is covered
* too much head turn
* body art

### 5. invalid input image 

```json
{
  "error": {
    "code": 5,
    "message": "file corrupted"
  }
}
```

You sent a picture with an unsupported resolution.

Convert it to any of the following formats:

* png (PNG)
* jpg (JPG, JPEG)
* HEIC
* bmp
* webp

### 6. empty input image

```json
{
  "error": {
    "code": 6,
    "message": "empty input image"
  }
}
```

The server received an empty file. Check out its contents.