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# Cancel a reservation and notify the eMSP (2.2.1 / 2.3.0)

POST https://api.ocpplab.io/ocpi/cpo/{version}/reservations/{ocpp_reservation_id}/cancel

Cancels a reservation made on one of our chargers and sends the eMSP the cancellation. OCPI 2.2.1 and 2.3.0 only.

Reference: https://docs.ocpplab.io/api-reference/ocpi/cpo-data/cancel-reservation

## Authentication

- `Authorization` header (bearer token, required) — Bearer authentication of the form `Bearer <token>`, where token is your auth token.

## Request

### Path parameters

- `version` (enum, required) — OCPI version: ``211`` (2.1.1), ``221`` (2.2.1) or ``230`` (2.3.0).
  - Allowed values: `211`, `221`, `230`
- `ocpp_reservation_id` (integer, required)

## Response

### 200

Successful Response

- `reservation_id` (string, required)
- `ocpp_reservation_id` (integer, required)
- `status` (string, required)

## Errors

### 400 Bad Request Error

Rejected by the gateway (business rule)

- `detail` (string, required) — Human-readable error message returned by the API.

### 401 Unauthorized Error

Missing or invalid Bearer token

- `detail` (string, required) — Human-readable error message returned by the API.

### 404 Not Found Error

Not found for this organization

- `detail` (string, required) — Human-readable error message returned by the API.

### 422 Unprocessable Entity Error

Validation Error

- `detail` (list of ValidationError, optional) — One entry per invalid field.

### 429 Too Many Requests Error

Gateway rate limit reached; retry after the given seconds

- `detail` (string, required) — Human-readable error message returned by the API.

### 502 Bad Gateway Error

Gateway unreachable, failing, or misconfigured

- `detail` (string, required) — Human-readable error message returned by the API.

### 504 Gateway Timeout Error

Gateway timed out

- `detail` (string, required) — Human-readable error message returned by the API.

## Types

### ValidationError

Why one field is invalid.

- `loc` (list of ValidationErrorLocItems, required) — Where the field is: ``body`` / ``query`` / ``path`` / ``header``, then its name.
- `msg` (string, required) — What is wrong, in English.
- `type` (string, required) — Machine-readable error code, e.g. ``missing``.
- `input` (any, optional) — The value that was sent.
- `ctx` (ValidationErrorCtx, optional) — Details of the rule that failed, e.g. `{"le": 200}`.

### ValidationErrorLocItems

### ValidationErrorCtx

Details of the rule that failed, e.g. `{"le": 200}`.

## Examples

**Response**

```json
{
  "reservation_id": "RES-1042",
  "ocpp_reservation_id": 1042,
  "status": "CANCELED"
}
```

**SDK Code**

```python
import requests

url = "https://api.ocpplab.io/ocpi/cpo/221/reservations/1042/cancel"

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

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

print(response.json())
```

```javascript
const url = 'https://api.ocpplab.io/ocpi/cpo/221/reservations/1042/cancel';
const options = {method: 'POST', 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://api.ocpplab.io/ocpi/cpo/221/reservations/1042/cancel"

	req, _ := http.NewRequest("POST", 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://api.ocpplab.io/ocpi/cpo/221/reservations/1042/cancel")

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

request = Net::HTTP::Post.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.post("https://api.ocpplab.io/ocpi/cpo/221/reservations/1042/cancel")
  .header("Authorization", "Bearer <token>")
  .asString();
```

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

$client = new \GuzzleHttp\Client();

$response = $client->request('POST', 'https://api.ocpplab.io/ocpi/cpo/221/reservations/1042/cancel', [
  'headers' => [
    'Authorization' => 'Bearer <token>',
  ],
]);

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

```csharp
using RestSharp;

var client = new RestClient("https://api.ocpplab.io/ocpi/cpo/221/reservations/1042/cancel");
var request = new RestRequest(Method.POST);
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://api.ocpplab.io/ocpi/cpo/221/reservations/1042/cancel")! as URL,
                                        cachePolicy: .useProtocolCachePolicy,
                                    timeoutInterval: 10.0)
request.httpMethod = "POST"
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()
```