Duplication glitch found in 'Pokémon Diamond' and 'Pearl' - Input

Does the glitch work with items too?— In order to duplicate master balls or any other rare item, you can employ this method by having one of your Pokémon hold the item in question.

While this glitch was noticed pretty early on into the game’s existence, a patch is almost certainly coming.

Time to get in on the action now before it becomes impossible.