How do you duplicate items on Pokemon Emerald?

Answer 1

All you have to do is get the item(s) and you can choose however many you want as long as you have the Pokemon in your box to do it. You can choose however many types as well. Give the item(s) to your Pokemon in the box you chose (doesn't matter which box). Then exit out and save. After you save, go back to the box and withdraw the items you gave. then exit and talk to the lady nearest to you, she should be a multi link battle room helper. Accept the challenge. Choose the option open level. Pick 2 Pokemon (doesn't matter which ones). She asks if you want to save the game before playing, say yes. There will be a short pause. Next you will see your save screen. Turn off the system. Turn it back on and check your bag and PC

To Clone Pokemon with an item, give the item to the Pokemon you wish to clone. Got to the battle tower and go to the PC. save in front of it, then deposit the Pokemon wherever you wish. Exit off the computer, then save... ... done. withdraw the pkmon and go to the lady nearest you with the blue hair and pink dress. the last one to the right that does the link challenge. talk to her, and challenge choose any 2 Pokemon you want ( doesn't matter) and she says that she's gonna save, say yes, then when she asks you to save (where your name is displayed and the time you spent playing is displayed, press yes one more time,, and she should say there is already a saved file, then turn the power off, then on. check your bag and PC!