I just noticed that the Category: Frauds and Fabrications, which is for fraudulent genealogies, was acquiring profiles at quite a clip, apparently part of the Spring Clean-Up. They don't go there -- that's for fraudulent genealogies! If you have a profile that's affected by one of the Anjou frauds, for instance, you put it into the Anjou fraud sub-category; if your profile belongs to some other widespread fraud that doesn't yet have a sub-category then create a sub-category for it, document the fraud and affected sources in there, and add your profile to that.
If it's just a one-off but commonly repeated error, the profile itself can and should provide its own documentation -- put a nice firm explanation of why it's erroneous at the very top of the profile, with a bolded, centered heading, and put an "Uncertain Existence" template on it, and it will show up in Google searches and as a match on Wikitree when someone tries to recreate the thing. I just beefed up the "Uncertain Existence" instructions, btw. https://www.wikitree.com/wiki/Category:Uncertain_Existence
I generally put a very stern warning at the very top of real profiles when I disconnect them from bogus profiles, for example: https://www.wikitree.com/wiki/Foote-43