Overnight, Pokémon GO introduced a new limit that targets the nicknames of the Pokémon. Trainers are reacting skeptically to the new change and to the error message: “Please enter a different nickname.”
Renaming Brake: Some Pokémon GO players noticed a change this morning that has quietly crept into the game. After you rename 30 Pokémon, you must take a forced break from renaming.
Update: The nickname restrictions were apparently due to a bug. This bug is addressed in this update article from Pokémon GO
“Please enter a different nickname”
Forced Break: After renaming 30 Pokémon, you will receive an error on the 31st. Pokémon GO says, “Please enter a different nickname.” But no matter what name you enter afterwards, none will be accepted.
Changed Overnight: On Reddit, user BECP reported that he noticed this new limit in the past hours. He states that this is not due to inappropriate names – it would happen regardless.
Other users have since confirmed the limit and say that the 31st renaming only works after a certain waiting period.
How long do you have to wait after 30 names? The community is now researching how much time must pass before you can rename again. Initial reports say that 30 minutes after the last renaming, number 31 can follow.
How Trainers are Reacting
Incomprehension: Many trainers cannot understand why Niantic is implementing such a restriction. For them, it is incomprehensible and just a pointless hurdle that makes life harder for trainers.
Player xKageyami writes that renaming Pokémon is already cumbersome and takes too much time. This limit would now put the icing on the cake of that process.
User letsplay1196 writes that it would be the most useless limit in Pokémon GO.
Why a hurdle? Many trainers rename their Pokémon according to their IV values. A Pikachu might be named “93%” or receive similar names. Now you can only do this for 30 monsters in a row before a break must be taken.
What’s the point of the limit? It is suspected that this limit was implemented due to server load. Reddit user Pwuz comments, “It’s probably to minimize server load. Every time you change a Pokémon’s name, Niantic’s servers have to be updated.”
Whether this limit will remain or if Niantic might test other settings is still unclear.

