PKSM is not able to automatically legalize my shiny Lv 100 Quilava

[Vixati]

It was traded to me in-person years ago. perfect iv's. Ability: Blaze. Item: none. Level: 100. Moves: Flamethrower and Flamewheel. Nature: Timid. And quilava CAN be shiny. I can't change the egg year for some reason, and this is what I get when trying to legalize it automatically in pksm:

"Unable to match an encounter from origin game." when the met level is 5 and location is New Bark Town, met year is 2011, while origin game is SoulSilver,

"OT name too long" it's only 7 letters,

and "Encounter type does not match encounter" Idk what this could mean.

I don't know what a legal combination of Ability, Item, ect. would be, as I've looked it up and gotten nowhere and I'm at a complete loss as to what to do to make the Quilava legal, and if there's any other changes like with stats that I need to make (Maybe the stats aren't equaling a perfect iv while it says that it has 6, for some reason? idk). It transfered fine, until it was in pokemon Black. Any help would be most appreciated.

Edited April 25 by Vixati