# tag_exists

**HTTP 409. Tag exists.**

## When you see it

You renamed a tag to a name another tag already has. That rename is a merge, and a merge has to be asked for.

## What to do

If you meant to merge, send the same request with `"merge": true`: the tag’s to-dos move to the existing tag, which keeps its own colour. If not, pick another name. `tagId` in the body is the existing tag.

## The body

`type` is `https://devs.inittasks.com/errors/tag_exists`. `instance` is the path that failed, here `/v1/tags/tg_8c1e0f3a9b2d4c6e8f1a3b5c7d9e0f21`. For the full RFC 9457 shape, the `request_id` field and the retry rules, see [errors and retries](/errors-and-retries).