If there are validation errors on the page, the page will be refreshed and an error summary with links to erroneous fields will appear. (inside.monster.com)
Shortly after it arrived, the game was removed from Google Play due to validation errors with the game's servers. (androidauthority.com)
It looks like Rockstar Games have gotten whatever the problem was that was making anyone downloading their new Grand Theft Auto: Vice City game throw Validation Errors fixed as the game is now back on the Google Play store as of a few moments ago. (droidgamers.com)