【Unity】Error building Player: UnityException: Bundle Identifier has not been set up correctly

Error building Player: UnityException: Bundle Identifier has not been set up correctly
Please set the Bundle Identifier in the Player Settings. 
The value must follow the convention 'com.YourCompanyName.YourProductName' and can contain alphanumeric characters and underscore.
Each segment must not start with a numeric character or underscore.

Unity で Android アプリを作成する時にこちらのエラーが発生した場合は
下記の手順で直すことができます

1. Unity のメニューの「File>Build Settings...」を選択します
2. Build Settings ウィンドウの「Player Settings...」ボタンを選択します
3. Inspector ビューの「Bundle Identifier」の文字列を変更します
   例)com.koganeblog.unitygame