API version: dev

---

# GET /error/400/reserved-identifier — 400 reserved identifier

General error response. As this endpoint is static, it can not return specific details or logs for a previously sent
error response.

## Request

```bash
curl \
  -H 'Authorization: Bearer secret-token:PIPeJGUt7c00ENn8a5uDlc' \
  https://api.example.com/error/400/reserved-identifier
```

## Response

### 200 · OK

Returns a static, human-readable explanation of the error.

#### Body

```plain
  _____           _                 _   _                          _    ____ ___
 | ____|_ __ ___ | |__   ___ _ __  | \ | | _____  ___   _ ___     / \  |  _ \_ _|
 |  _| | '_ ` _ \| '_ \ / _ \ '__| |  \| |/ _ \ \/ / | | / __|   / _ \ | |_) | |
 | |___| | | | | | |_) |  __/ |    | |\  |  __/⟩  ⟨| |_| \__ \  / ___ \|  __/| |
 |_____|_| |_| |_|_.__/ \___|_|    |_| \_|\___/_/\_\\__,_|___/ /_/   \_\_|  |___|


 Error 400 - Reserved Identifier

 The exception is thrown when an identifier is used which is already in use or reserved.

 Link to the documentation: https://ember-nexus.github.io/api

 Link to http.dev's explanation of the 400 error code: https://http.dev/400
```

#### Headers

```http
Access-Control-Allow-Headers: Authorization, Origin, X-Requested-With, Content-Type, Accept, Access-Control-Request-Method
Access-Control-Allow-Methods: GET, HEAD, POST, OPTIONS, PUT, PATCH, DELETE, PROPFIND, PROPPATCH, MKCOL, COPY, MOVE, LOCK, UNLOCK
Access-Control-Allow-Origin: *
Access-Control-Expose-Headers: ETag, Location
Allow: GET, HEAD, POST, OPTIONS, PUT, PATCH, DELETE, PROPFIND, PROPPATCH, MKCOL, COPY, MOVE, LOCK, UNLOCK
Cache-Control: no-cache, private
X-Powered-By: Ember Nexus API
```

#### Schema

```json
{
  "type": "string"
}
```

[MDN](https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/200) · [HTTP.dev](https://http.dev/200)

## Request Header

### `Authorization` (optional)

Bearer token for user authentication. If omitted, the request is processed as an anonymous user; if provided, the associated user account is used.

[MDN](https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Authorization) · [HTTP.dev](https://http.dev/authorization) · [Authentication guide](/guide/authentication.md)

## Response Header

### Other Headers

#### `Access-Control-Allow-Headers` (always)

Specifies which HTTP headers can be used during a cross-origin request, returned in preflight responses.

Example: `Authorization, Origin, X-Requested-With, Content-Type, Accept, Access-Control-Request-Method`

[MDN](https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Access-Control-Allow-Headers) · [HTTP.dev](https://http.dev/access-control-allow-headers)

#### `Access-Control-Allow-Methods` (always)

Indicates which HTTP methods are permitted for cross-origin requests, typically returned in preflight responses.

Example: `GET, HEAD, POST, OPTIONS, PUT, PATCH, DELETE, PROPFIND, PROPPATCH, MKCOL, COPY, MOVE, LOCK, UNLOCK`

[MDN](https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Access-Control-Allow-Methods) · [HTTP.dev](https://http.dev/access-control-allow-methods)

#### `Access-Control-Allow-Origin` (always)

Specifies which origin(s) may access the resource.

Example: `*`

[MDN](https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Access-Control-Allow-Origin) · [HTTP.dev](https://http.dev/access-control-allow-origin)

#### `Access-Control-Expose-Headers` (always)

Lists the response headers that browsers are allowed to access from JavaScript beyond the default restricted set.

Example: `ETag, Location`

[MDN](https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Access-Control-Expose-Headers) · [HTTP.dev](https://http.dev/access-control-expose-headers)

#### `Allow` (always)

Lists the HTTP methods supported by the endpoint; returned alongside a `405 Method Not Allowed` response.

Example: `GET, HEAD, POST, OPTIONS, PUT, PATCH, DELETE, PROPFIND, PROPPATCH, MKCOL, COPY, MOVE, LOCK, UNLOCK`

[MDN](https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Allow) · [HTTP.dev](https://http.dev/allow)

#### `Cache-Control` (always)

Directives controlling caching behavior for the response.

Example: `no-cache, private`

[MDN](https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Cache-Control) · [HTTP.dev](https://http.dev/cache-control)

#### `X-Powered-By` (always)

Identifies the underlying API implementation.

Example: `Ember Nexus API`

[MDN](https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/X-Powered-By) · [HTTP.dev](https://http.dev/x-powered-by)

---

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