title: AdMob banner ad request fails with code ERROR_CODE_INVALID_REQUEST 1
body: <p>I'm having some problems with showing an AdMob banner. I get error 1 which means <code>ERROR_CODE_INVALID_REQUEST</code>. When I change the <code>setAdUnitId</code> and use an <code>UnitId</code> for testing, it works. But when I use my <code>UnitId</code> provided from <code>AdMob</code>, I get the error.</p>
  
  <p>This is the layout:</p>
  
  <pre><code>&lt;RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
              xmlns:tools="http://schemas.android.com/tools"
              xmlns:ads="http://schemas.android.com/apk/res-auto"
              android:layout_width="match_parent"
              android:layout_height="match_parent"
              android:background="#262626"
              tools:context="com.elis91.elis.contatti.Contatti"&gt;
  
  &lt;LinearLayout
      android:id="@+id/linearLayout"
      android:layout_width="match_parent"
      android:layout_height="wrap_content"
      android:background="#1e88e6"
      android:orientation="horizontal"&gt;
  
      &lt;TextView
          android:id="@+id/textView5MSGnonLetti"
          android:layout_width="match_parent"
          android:layout_height="wrap_content"
          android:text="You have 0 new messagges"
          android:textAppearance="?android:attr/textAppearanceLarge"
          android:textColor="#cdfff9f9"
          android:textSize="20dp"/&gt;
  &lt;/LinearLayout&gt;
  
  &lt;ListView
      android:id="@+id/listView"
      android:layout_width="match_parent"
      android:layout_height="match_parent"
      android:layout_alignParentLeft="true"
      android:layout_alignParentStart="true"
      android:layout_below="@+id/linearLayout"
      android:layout_above="@+id/relativeLayout3"/&gt;
  
  &lt;RelativeLayout
      android:layout_width="match_parent"
      android:layout_height="52dp"
      android:layout_alignParentBottom="true"
      android:layout_alignParentLeft="true"
      android:layout_alignParentStart="true"
      android:id="@+id/relativeLayout3"
      android:gravity="bottom"&gt;
  
      &lt;com.google.android.gms.ads.AdView
          android:id="@+id/adView"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_centerHorizontal="true"
          android:layout_alignParentBottom="true"
          ads:adSize="BANNER"
          ads:adUnitId="@+id/banner_ad_unit_id"&gt;
      &lt;/com.google.android.gms.ads.AdView&gt;
  
  &lt;/RelativeLayout&gt;
  </code></pre>
  
  <p></p>
  
  <p>This is the Android:</p>
  
  <pre><code>    private void setupGoogleAds(){
      AdView mAdView = (AdView) findViewById(R.id.adView);
      AdRequest adRequest = new AdRequest.Builder()
              //.addTestDevice(AdRequest.DEVICE_ID_EMULATOR)
              .build();
  
      mAdView.loadAd(adRequest);
      mAdView.setAdListener(new AdListener() {
          @Override
          public void onAdOpened() {
              Log.d("esx", "onAdOpened");
              // Save app state before going to the ad overlay.
          }
  
          @Override
          public void onAdLoaded() {
              Log.d("esx", "onAdLoaded");
              // Save app state before going to the ad overlay.
          }
  
          @Override
          public void onAdFailedToLoad(int errorCode) {
  
              Log.d("esx", "onAdFailedToLoad: " + errorCode+"--"+AdRequest.ERROR_CODE_NO_FILL+"-"+AdRequest.ERROR_CODE_NETWORK_ERROR+"-"+AdRequest.ERROR_CODE_INVALID_REQUEST+"-"+AdRequest.ERROR_CODE_INTERNAL_ERROR+"-");
              // Save app state before going to the ad overlay.
          }
  
          @Override
          public void onAdClosed() {
              Log.d("esx", "onAdClosed");
              // Save app state before going to the ad overlay.
          }
  
          @Override
          public void onAdLeftApplication() {
              Log.d("esx", "onAdLeftApplication");
              // Save app state before going to the ad overlay.
          }
      });
  }
  </code></pre>