The selected Pokemon brought over from 𝐏𝐎𝐊𝐄𝐌𝐎𝐍 𝐆𝐎 has not been obtained in this save file. EASY FIX
Here are some solutions to this stupid limitation in Pokemon Home when trading from Pokemon GO into Pokemon Sword and Shield.
Error Code: the selected Pokemon brought over from Pokemon go has not been obtained in this save file / cant not transfer / will not transfer / pokemon home error / error message / what it means / how to fix / will not transfer / cancel icon / cancel symbol / what it means / how to fix / how it works / pokemon go / pokemon home / why cant i transfer / how do i transfer /