After purchase I will email you to confirm a time then we both log on to Pokemon Scarlet/Violet, press "X" to open the main menu, then select "Poke Portal". On this Screen press "L" to connect to the Internet. Once connected, please select "Link Trade" then "Set Link Code". I will give you a code that we can use.
You will need to trade a Pokemon you no longer want in exchange for your purchase. You also need to send me your in game name before trading.
PLEASE NOTE: NINTENDO SWITCH ONLINE MEMBERSHIP IS REQUIRED. YOU NEED TO REACH THE FIRST POKEMON CENTRE TO BE ABLE TO TRADE - THIS TAKES AROUND AN HOUR OF GAMEPLAY.