[PBS Question] Alternate Pokemon Forms not in Pokemon.txt

[tyranitar28]

So I just have an error saying that an alternate form's Internal Name that is put on the TM list is undefined.

Do I have to go through the effort of making each of the Pokemon forms their own separate Pokemon and use the Internal Names in the TM list?

Or is there a quicker way to remedy this?

 

[StCooler]

Do I have to go through the effort of making each of the Pokemon forms their own separate Pokemon and use the Internal Names in the TM list?

Yes. Read the docs.
If you don't define the forms in pokemonforms.txt, then the game cannot know that the Pokémon has different forms.