> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs-unsw-v6.advance-uac.com/unsw-advance-institution-api/catalogue/delete-a-catalogue-subject/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs-unsw-v6.advance-uac.com/_mcp/server.

# Delete a catalogue subject

DELETE https://unsw-v6-dev.advance-uac.com/institution-api/institution/catalogue/subjects/{code}/{year}

Removes the subject from the institution's catalogue, along with every external id recorded
against it, which frees those ids for another subject. 404 if there is no such subject.

This touches the CATALOGUE only: a subject's membership of a program is held separately, so
program structures and submitted applications are unaffected.

Reference: https://docs-unsw-v6.advance-uac.com/unsw-advance-institution-api/catalogue/delete-a-catalogue-subject

## Authentication

- `Authorization` header (bearer token, required) — Paste a Keycloak access token (no "Bearer " prefix)

## Servers

- `https://unsw-v6-dev.advance-uac.com/institution-api` (Dev, default)
- `https://unsw-v6-test.advance-uac.com/institution-api` (Test)

## Request

### Path parameters

- `code` (string, required)
- `year` (integer, required)

## Response

### 204

The subject was deleted, along with its external ids.

## Errors

### 404 Not Found Error

No such resource for this institution.

- `status` (integer, optional) — Repeats the HTTP status code.
- `error` (string, optional) — What went wrong, in a form safe to show a developer.

## Examples

**SDK Code**

```python
import requests

url = "https://unsw-v6-dev.advance-uac.com/institution-api/institution/catalogue/subjects/code/1"

headers = {"Authorization": "Bearer <token>"}

response = requests.delete(url, headers=headers)

print(response.json())
```

```javascript
const url = 'https://unsw-v6-dev.advance-uac.com/institution-api/institution/catalogue/subjects/code/1';
const options = {method: 'DELETE', headers: {Authorization: 'Bearer <token>'}};

try {
  const response = await fetch(url, options);
  const data = await response.json();
  console.log(data);
} catch (error) {
  console.error(error);
}
```

```go
package main

import (
	"fmt"
	"net/http"
	"io"
)

func main() {

	url := "https://unsw-v6-dev.advance-uac.com/institution-api/institution/catalogue/subjects/code/1"

	req, _ := http.NewRequest("DELETE", url, nil)

	req.Header.Add("Authorization", "Bearer <token>")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(res)
	fmt.Println(string(body))

}
```

```ruby
require 'uri'
require 'net/http'

url = URI("https://unsw-v6-dev.advance-uac.com/institution-api/institution/catalogue/subjects/code/1")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Delete.new(url)
request["Authorization"] = 'Bearer <token>'

response = http.request(request)
puts response.read_body
```

```java
import com.mashape.unirest.http.HttpResponse;
import com.mashape.unirest.http.Unirest;

HttpResponse<String> response = Unirest.delete("https://unsw-v6-dev.advance-uac.com/institution-api/institution/catalogue/subjects/code/1")
  .header("Authorization", "Bearer <token>")
  .asString();
```

```php
<?php
require_once('vendor/autoload.php');

$client = new \GuzzleHttp\Client();

$response = $client->request('DELETE', 'https://unsw-v6-dev.advance-uac.com/institution-api/institution/catalogue/subjects/code/1', [
  'headers' => [
    'Authorization' => 'Bearer <token>',
  ],
]);

echo $response->getBody();
```

```csharp
using RestSharp;

var client = new RestClient("https://unsw-v6-dev.advance-uac.com/institution-api/institution/catalogue/subjects/code/1");
var request = new RestRequest(Method.DELETE);
request.AddHeader("Authorization", "Bearer <token>");
IRestResponse response = client.Execute(request);
```

```swift
import Foundation

let headers = ["Authorization": "Bearer <token>"]

let request = NSMutableURLRequest(url: NSURL(string: "https://unsw-v6-dev.advance-uac.com/institution-api/institution/catalogue/subjects/code/1")! as URL,
                                        cachePolicy: .useProtocolCachePolicy,
                                    timeoutInterval: 10.0)
request.httpMethod = "DELETE"
request.allHTTPHeaderFields = headers

let session = URLSession.shared
let dataTask = session.dataTask(with: request as URLRequest, completionHandler: { (data, response, error) -> Void in
  if (error != nil) {
    print(error as Any)
  } else {
    let httpResponse = response as? HTTPURLResponse
    print(httpResponse)
  }
})

dataTask.resume()
```