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A friend code is your personal code that you need to trade/battle over Wi-Fi. You get it the first time you try to connect to Wi-Fi in your game. It's on your Pal Pad (in your Key Items section).
To trade/battle with other people, you need to register their FC into your Pal Pad. Then go to the bottom of any PokeCenter to access the Wi-Fi station.
You can also trade/battle without FCs by using the GTS (in Jubliffe City) or the Battle Tower (after you beat the Elite 4).
Anyways, this forum is only for Wi-Fi trading requests, so I'll have to close this.
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