The question is NOT about the organizer badge, but about what retag means.
I was checking what the organizer badge is and noticed there is not a description of what 'retag' exactly means or how it's done.
Checking Organizer badge not awarded after a retag, it says that the badge is warded for re-tagging other people's posts. And there are still 2 related questions: What exactly is the Organizer badge? and Please improve the description of the Organizer badge
But there is still no information about what retag means. Not even in the help https://stackoverflow.com/help/badges
Retagging by dictionary definitions doesnt help (https://www.merriam-webster.com/dictionary/retag), much less when applied to this specific context ( Much less for non native speakers) .
So, does retag in this context means to duplicate accidentally an existing tag when proposing one?, to edit one badly written already created tag? or what exactly?