Select platform: [Android (beta)
![New](https://developers.google.com/static/admob/images/new.svg)](https://developers.google.com/ad-manager/mobile-ads-sdk/android/next-gen/native/validator "View this page for the Android (beta) platform docs.") [Android](https://developers.google.com/ad-manager/mobile-ads-sdk/android/native/validator "View this page for the Android platform docs.") [iOS](https://developers.google.com/ad-manager/mobile-ads-sdk/ios/native/validator "View this page for the iOS platform docs.")

<br />

Custom rendering lets you design an ad placement that matches the style of your app. While this provides a lot of flexibility, it's important to ensure your placements remain compliant with Ad Manager policies.

<br />

Native Validator is a new feature to help you catch policy violations before
your app ships. It automatically identifies certain policy violations in your
app and notifies you through the app's UI.
| **Key Point:** Native Validator will appear only on test ads. Live ad requests will never show Native Validator.

Native Validator is enabled by default for test ads, but can be disabled as
shown below. Keep in mind however that once the validator is disabled, test ads
will no longer show information about potential issues with your ad layouts.

## Prerequisites

- Google Mobile Ads SDK 19.2.0 or higher.

<!-- -->

- Ensure your device is configured as a [test
  device](https://developers.google.com/ad-manager/mobile-ads-sdk/android/test-ads#enable_test_devices).

## Using Native Validator

Native Validator automatically alerts you of certain policy violations in your
UI through an overlay popup next to the ad.

![](https://developers.google.com/static/admob/images/validator/ad-manager-overlay.png)

Clicking on **See Issues** takes you to a fullscreen list of the relevant policy
violations.

![](https://developers.google.com/static/admob/images/validator/implementation-issues.png)

## Disabling the validator

To disable Native Validator, add a `<meta-data>` tag with a name of
`com.google.android.gms.ads.flag.NATIVE_AD_DEBUGGER_ENABLED` and value of
`false` to your `AndroidManifest.xml` within the `<application>` tag.  

    <manifest>
      <application>
        <!-- Sample AdMob App ID: ca-app-pub-3940256099942544~3347511713 -->
        <meta-data
            android:name="com.google.android.gms.ads.APPLICATION_ID"
            android:value="ca-app-pub-xxxxxxxxxxxxxxxx~yyyyyyyyyy"/>
        \<meta-data android:name="com.google.android.gms.ads.flag.NATIVE_AD_DEBUGGER_ENABLED"
    android:value="false" /\>
      </application>
    </manifest>