When can You Use the GTS in Pokemon Black White 2?

In Pokémon Black and White 2, the Global Trade Station (GTS) becomes accessible after you defeat the Elite Four and become the Pokémon Champion. You can then visit the GTS in any Pokémon Center to trade Pokémon with players worldwide. Additionally, you can also leave Pokémon for trade requests and search for specific Pokémon offered by other players.