I had pokeballs and a space in my party. How come when I evolved my Nincada I did'nt get Shedinja?
You want to make sure that you have a regular Pokeball, not a variation of one. Also, make sure you didn’t catch a Pokémon and it filled up the empty space in your party.
Hope this helps! :)
They have to be Pokeballs. Not great balls, ultra balls, net balls, or any other balls. They have to be your plain old Pokeballs to get a shedninja. If you did have normal pokeballs, then you might not of had space in your party.