According to Serebii.net, The Pokémon Company has announced that 5,954 Pokémon Sun & Moon players have been banned for “altered save data”. Although normally nothing to worry about for people who do not try to hack their games, there are a number of legitimately obtained Pokémon/move combinations that can erroneously trigger the system. No cases of false positives ending in a complete system ban have been reported, but it is something to keep an eye out for.

Players will know that they have been banned if the error code 090-0212 appears when they try to connect to online functions. It prohibits participation in Rating Battles, competitions, and Global Missions, as well as use of Game Sync.

Hopefully this will not cause any issues for players bringing in many new Pokémon and movesets from older games via Bank.