Bug - Entering ISBN for item not on Amazon adds game to list

Hi
When I enter an ISBN and select "add to collection", if the ISBN isn't on Amazon it will add "Last Horizon - PC Games". Can it come up with an error message letting me know the item can't be found rather than adding a title I'll have to delete?
Kind regards
When I enter an ISBN and select "add to collection", if the ISBN isn't on Amazon it will add "Last Horizon - PC Games". Can it come up with an error message letting me know the item can't be found rather than adding a title I'll have to delete?
Kind regards