## Update a custom asset

`custom_pages.assets.update(strasset_name, AssetUpdateParams**kwargs)  -> AssetUpdateResponse`

**put** `/{accounts_or_zones}/{account_or_zone_id}/custom_pages/assets/{asset_name}`

Updates the configuration of an existing custom asset.

### Parameters

- `asset_name: str`

  The unique name of the custom asset. Can only contain letters (A-Z, a-z), numbers (0-9), and underscores (_).

- `description: str`

  A short description of the custom asset.

- `url: str`

  The URL where the asset content is fetched from.

- `account_id: Optional[str]`

  The Account ID to use for this endpoint. Mutually exclusive with the Zone ID.

- `zone_id: Optional[str]`

  The Zone ID to use for this endpoint. Mutually exclusive with the Account ID.

### Returns

- `class AssetUpdateResponse: …`

  - `description: Optional[str]`

    A short description of the custom asset.

  - `last_updated: Optional[datetime]`

  - `name: Optional[str]`

    The unique name of the custom asset. Can only contain letters (A-Z, a-z), numbers (0-9), and underscores (_).

  - `size_bytes: Optional[int]`

    The size of the asset content in bytes.

  - `url: Optional[str]`

    The URL where the asset content is fetched from.

### Example

```python
import os
from cloudflare import Cloudflare

client = Cloudflare(
    api_email=os.environ.get("CLOUDFLARE_EMAIL"),  # This is the default and can be omitted
    api_key=os.environ.get("CLOUDFLARE_API_KEY"),  # This is the default and can be omitted
)
asset = client.custom_pages.assets.update(
    asset_name="my_custom_error_page",
    description="Custom 500 error page",
    url="https://example.com/error.html",
    account_id="account_id",
)
print(asset.description)
```

#### Response

```json
{
  "errors": [
    {
      "code": 1000,
      "message": "message",
      "documentation_url": "documentation_url",
      "source": {
        "pointer": "pointer"
      }
    }
  ],
  "messages": [
    {
      "code": 1000,
      "message": "message",
      "documentation_url": "documentation_url",
      "source": {
        "pointer": "pointer"
      }
    }
  ],
  "success": true,
  "result": {
    "description": "Custom 500 error page",
    "last_updated": "2014-01-01T05:20:00.12345Z",
    "name": "my_custom_error_page",
    "size_bytes": 1024,
    "url": "https://example.com/error.html"
  }
}
```