Overworld items script location

[Chachythehuman]

Hi anyone can tell where are located the overworld item script?? Im using the npc editor and always the script for the overworld pokeballs are a weird 4-digits number, are those in the a056 narc?? How can i find them sorry by my bad english

[Kaphotics]

They call a secondary script with that.

I don't remember the details but that should be something to go with.