How to enter pal park?

Question

There are two guys who guard the the pal park building and says the pal park is not ready yet.

Answer 1

You have to see every sinnoh pokemon first. Then you can go in.

Comments

But I saw them all

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Oh!! you meant the national dex yes I saw a video on you tube ,after that I went back to sandgem town and obtained my national pokedex :)

im happy first national dex on my my life

Answer 2

Get the national dex, migerate 6 pokemon from a different region and enter.

the guy there should let you past.