You need to use a different version code for your APK because you already have one with version code 1. How do I change the version?
<p>I am trying to upload my apk on google play . The apk file is unity3d . Google play wont let me be I already have the version . I get this message on google play.You need to use a different version code for your APK because you already have one with version code 1. I have rebuild the project and change the version to 2. I have also made changes in the android manifest script and I still couldn't upload the apk file. Here are the scripts that I had made changes so I can upload on google play :</p>

<p>{</p>

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<pre class="snippet-code-css lang-css prettyprint-override"><code>&lt;?xml version="2.0" encoding="utf-8"?&gt;
&lt;manifest xmlns:android="http://schemas.android.com/apk/res/android" android:versionCode="2" android:versionName="1.7" package="com.Be.Jackson" android:installLocation="preferExternal"&gt;
  &lt;supports-screens android:anyDensity="true" android:largeScreens="true" android:normalScreens="true" android:smallScreens="true" android:xlargeScreens="true" /&gt;
  &lt;application android:icon="@drawable/app_icon" android:label="@string/app_name" android:theme="@style/UnityThemeSelector" android:debuggable="false" android:isGame="true" android:banner="@drawable/app_banner"&gt;
    &lt;activity android:label="@string/app_name" android:name="com.unity3d.player.UnityPlayerActivity" android:screenOrientation="fullSensor" android:launchMode="singleTask" android:configChanges="mcc|mnc|locale|touchscreen|keyboard|keyboardHidden|navigation|orientation|screenLayout|uiMode|screenSize|smallestScreenSize|fontScale"&gt;
      &lt;intent-filter&gt;
        &lt;action android:name="android.intent.action.MAIN" /&gt;
        &lt;category android:name="android.intent.category.LAUNCHER" /&gt;
        &lt;category android:name="android.intent.category.LEANBACK_LAUNCHER" /&gt;
      &lt;/intent-filter&gt;
      &lt;meta-data android:name="unityplayer.UnityActivity" android:value="true" /&gt;
    &lt;/activity&gt;
    &lt;activity android:name="com.google.games.bridge.NativeBridgeActivity" android:theme="@android:style/Theme.Translucent.NoTitleBar.Fullscreen" /&gt;
    &lt;!-- Required for Nearby Connections API --&gt;
    &lt;meta-data android:name="com.google.android.gms.nearby.connection.SERVICE_ID" android:value="" /&gt;
    &lt;!-- the space in these forces it to be interpreted as a string vs. int --&gt;
    &lt;meta-data android:name="com.google.android.gms.games.APP_ID" android:value="\ 643756129390" /&gt;
    &lt;meta-data android:name="com.google.android.gms.games.unityVersion" android:value="\ 0.9.34" /&gt;
    &lt;meta-data android:name="com.google.android.gms.version" android:value="@integer/google_play_services_version" /&gt;
    &lt;activity android:exported="false" android:name="com.google.android.gms.common.api.GoogleApiActivity" android:theme="@android:style/Theme.Translucent.NoTitleBar" /&gt;
  &lt;/application&gt;
  &lt;uses-sdk android:minSdkVersion="14" android:targetSdkVersion="23" /&gt;
  &lt;uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /&gt;
  &lt;uses-feature android:glEsVersion="0x00020000" /&gt;
  &lt;uses-permission android:name="android.permission.INTERNET" /&gt;
  &lt;uses-feature android:name="android.hardware.sensor.accelerometer" android:required="false" /&gt;
  &lt;uses-feature android:name="android.hardware.touchscreen" android:required="false" /&gt;
  &lt;uses-feature android:name="android.hardware.touchscreen.multitouch" android:required="false" /&gt;
  &lt;uses-feature android:name="android.hardware.touchscreen.multitouch.distinct" android:required="false" /&gt;
&lt;/manifest&gt;</code></pre>
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<p>}</p>

<p>{</p>

<p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
<div class="snippet-code">
<pre class="snippet-code-css lang-css prettyprint-override"><code>&lt;?xml version="2.0" encoding="utf-8"?&gt;
&lt;manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.Be.Jackson" android:installLocation="preferExternal" android:versionName="2.0" android:versionCode="2"&gt;
  &lt;supports-screens android:smallScreens="true" android:normalScreens="true" android:largeScreens="true" android:xlargeScreens="true" android:anyDensity="true" /&gt;
  &lt;application android:theme="@style/UnityThemeSelector" android:icon="@drawable/app_icon" android:label="@string/app_name" android:debuggable="true"&gt;
    &lt;activity android:name="com.unity3d.player.UnityPlayerActivity" android:label="@string/app_name"&gt;
      &lt;intent-filter&gt;
        &lt;action android:name="android.intent.action.MAIN" /&gt;
        &lt;category android:name="android.intent.category.LAUNCHER" /&gt;
      &lt;/intent-filter&gt;
      &lt;meta-data android:name="unityplayer.UnityActivity" android:value="true" /&gt;
    &lt;/activity&gt;
  &lt;/application&gt;
  &lt;uses-sdk android:minSdkVersion="14" android:targetSdkVersion="23" /&gt;
&lt;/manifest&gt;</code></pre>
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<p>}</p>