Forge map name restriction

I created a map a month ago called ‘Fort Anaxadridas II’. It saved fine, did everything else fine. Now when I edit and try to save the map it tells me, “Invalid Entry” with underlining text saying : “This is a reserved entry or it violates the Xbox code of conduct.”

How is the name of a spartan king all of a sudden reserved or against the code of conduct? Please fix this. This is very frustrating.