I tried to delete a category using site builder in confluence, but I can't.
i can see message
You're not allowed to delete the category [category name] at this time, the category might still be in use.
Thanks! I'm sorry if that seemed grumpy, but without the full text, it's hard to say where an error might be coming from.
That message really does come from "you have spaces that are in that category". One of my current projects has me digging through the raw code of Confluence and although this is "first look" rather than "proper investigation", it looks like the only way to get this message is from not having removed or deleted all the spaces in it.
The three things I would do next:
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