Question: While using the [facebook debugger](https://developers.facebook.com/tools/debug/og/object/), it complains:

> 
> Warning
>  fb:app\_id hasn't been included in the meta tags. Specify the app ID so that stories shared to Facebook will be properly attributed to the app. Alternatively, app\_id can be set in url when open the share dialog. Otherwise, the default app id( 966242223397117 ) will be assigned.
> 
> 
> 

I don't understand why I have such a message, since I don't have an app\_id for my website, and I shouldn't need why since I'm not doing any facebook connect or using any of their plugin. 

Am I missing something, or is it simply that facebook wants to push me to create an app for my website?

Answer: 
You need to add this into your head tag in HTML source

```
<meta property="fb:app_id" content="XXXXXXXXXXXXXXX" />

```

That is default app id.

Replace `XXX` With your app id
This means your page is missing the `fb:app_id` meta tag.

> 
> Missing Properties The following required properties are missing: fb:app\_id
> 
> 
> 

You **must use the `fb` prefix** (the `og` prefix won't work!)

The meta tag should look like this (replace the app id "474629550209194" below with your own)

```
<meta property="fb:app_id" content="474629550209194">

```

The meta tag is `fb:app_id` - `og:app_id` (open graph) **won't** work.