As of yesterday, we can show the following dialog to moderators and users with the "create new tags" privilege when they attempt to create one or more new tags either while asking a question or during an edit:
![Screenshot of new tag creation warning modal: "Are you sure you want to create new tags? The following tags do not exist: [noot-noot]. Did you intend to create these tags? Check your spelling and make sure existing tags do not already cover the topic." At the bottom, there are 2 buttons: "Yes, I'm sure" (highlighted in blue) and "Go back".](https://i.stack.imgur.com/gQbdD.png)
What sites is it enabled on?
As of January 24, 2022, this feature is currently enabled on the following sites:
- Ask Ubuntu
- Biblical Hermeneutics
- Blender
- English Language & Usage
- Mi Yodeya (Judaism)
- Mathematics (and Mathematics Meta)
- MathOverflow
- Pets
- Physics
- Stack Overflow
- Stack Overflow em Português (Stack Overflow in Portuguese)
- Server Fault
- Sound Design
- Sports (and Sports Meta)
- Super User
- Unix & Linux
How can we get this warning enabled on a site?
Misspellings aren't really the main reason to add an extra step before tag creation; you can fix them right away, or the site moderators can merge/rename the misspelled tag to the correct name if necessary. However, this feature is much more useful for broader issues involving unnecessary tag creation, such as users creating redundant tags without first checking whether a relevant tag already exists. This warning exists as a reminder to check for existing tags on the topic before creating new ones.
If the creation of unnecessary tags is a widespread/recurring problem on a Stack Exchange site, you should create a post on the site's Meta suggesting that this tag creation warning be enabled for the site. If there is community consensus in support of the request, the site moderators can then add the status-review tag to the request to escalate it for staff attention. The CMs will then assess the request, and enable this feature if it makes sense to do so.
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