How come when you scan ar markers you says unknown markers fo pokedex 3d?

When you scan AR markers in Pokémon AR games like Pokédex 3D, the "unknown markers" message typically appears because the markers you are using are not recognized or are not part of the game's database. This can happen if the markers are not officially released by the game developers or if they have been incorrectly printed. Additionally, ensure that the markers are clear and not damaged, as poor quality scans may also lead to recognition issues. Always use the official markers provided by the game for accurate scanning.