TL DR: Due to how RNG is called, PID, IVs, Nature, Gender, Ability, Encounter slot are related and can be derived.ġ. (Encounter slot refers to the programmed data in a table, that hosts a list of level and species that can be encountered in a map)

In Generations 3 and 4, due to an in-depth understanding of how the Pseudo-Random Number Generator works (as well as game mechanics), the Personality Value (PID) is tied to various other values related to the Pokémon generation procedure in-game, such as Individual Values (IVs), Gender, Ability slot, Nature, and Encounter Slot. The reason why people get various PID-Mismatch or Invalid Encounter type of messages, is because they did not modify the Pokémon correctly. This guide to resolve any issues users get when they try to change nature or PID of a Pokémon from Gen 3 or Gen 4.ĭO NOT USE ANY POKéMON WITH MODIFIED PID ONLINE!