The official Japanese Pokémon website has announced that the Pocket Monsters Sword and Shield Official Guide Book Complete Story Guide + Galar Zukan (ポケットモンスター ソード・シールド　公式ガイドブック 完全ストーリー攻略＋ガラル図鑑) produced by The Pokémon Company and Overlap Inc. and released on December 7th, 2019 has some errors and that there will be a second edition of the book. Customers that purchased the original edition can receive this second edition free of charge starting in mid-February 2020. Overlap will send out the new revision by mail as the original store locations will not accept an exchange.

The official site posted a PDF listing all the errors in the original version of the book as of December 26th, 2019.

Source: https://www.pokemon.co.jp/info/2019/12/191226_at01.html