Trying to move a category but getting "You can't nest a subcategory under another." error

[simon]

@Monte_Kalisch

I have a category (itself with 4 subcategories) that I had at the root, but I want to move under an existing root category.

Discourse only supports two levels of category nesting (category/sub-category.) You’ll need to change the Parent Category of the category’s 4 subcategories before you can convert the root category to a sub-category.