# immutable_field

> This field cannot be changed after creation. Some settings are fixed once a resource exists, for example a database engine.

**This field cannot be changed after creation.** Some settings are fixed once a resource exists, for example a database engine. Changing them in place would risk your data.

- **HTTP status:** `422 Unprocessable Content`
- **CLI exit code:** `2` (the request or file is not valid)
- **Retry:** not as it is; the same request will fail the same way until the cause is fixed

## How to fix it

Create a new {resource_type} instead.

Words in `{braces}` are filled in from the error response, which names the exact resource.

## What the response looks like

```json
{
  "type": "https://guv.dev/errors/immutable_field",
  "title": "This field cannot be changed after creation",
  "status": 422,
  "code": "immutable_field",
  "detail": "Some settings are fixed once a resource exists, for example a database engine.",
  "fix": "Create a new {resource_type} instead.",
  "docs_url": "https://guv.dev/errors/immutable_field",
  "request_id": "req_01jbx2m9k7q4r8t5v6w3y0z1rq"
}
```

The `code` field is stable: match on it, not on `title` or `detail`, which may be reworded.