- `Category`,
- `FundingCategory`,
- `Language`,
- `MusicFocus`,
- `Topic`,
- `Type`

- `Category`,
- `FundingCategory`,
- `MusicFocus`

The conflict responses should be send with an HTTP 409 status code as
they’re defined in our documentation. This was not the case as the
dashboard couldn’t handle these error codes, but is now fixed in
dashboard@4a07ad9e.