# DUPLICATE_VALUE: Value already in use

> Another record already has a value that must be unique. The `errors` list names the fields.

Sent by the management API (400). The page: https://coho-cms.com/errors/duplicate-value/

## What to do

Choose a different value for those fields.

## The response

```json
{
  "code": "DUPLICATE_VALUE",
  "type": "https://coho-cms.com/errors/duplicate-value",
  "title": "Value already in use",
  "status": 400,
  "detail": "What went wrong in this request, in a sentence.",
  "instance": "/v1/projects/…"
}
```

Every error code: https://coho-cms.com/errors/