> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs.shimi.cash/api-reference/shimi-api/card-issuing/change-card-pin/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.shimi.cash/_mcp/server.

# Change Card PIN

POST https://shimi-waas-api-9493532b9281.herokuapp.com/api/v1/card/change-pin/{cardId}
Content-Type: application/json

**Currently unavailable.** This endpoint returns an error by design: cardholders must use an ATM to change their PIN. Kept in this collection for completeness; do not build against it yet — ask us before relying on it.

**Path:** `cardId` (string, required).

**Body (JSON):** `oldPin` (string, required), `newPin` (string, required).

Always fails: after the presence check the endpoint returns 400 with the ATM message below. No success response exists today.

> All errors from this folder use `{ "status": "error", "message": "..." }` and are returned as **HTTP 400** (including "Card not found" — there is no 404). Success bodies use `status: "success"` (not `success: true` like the VTU endpoints).

Reference: https://docs.shimi.cash/api-reference/shimi-api/card-issuing/change-card-pin

## Authentication

- `Authorization` header (bearer token, required) — Access token from Generate Access Token (valid 15 minutes).

## Request

### Path parameters

- `cardId` (string, required) — The card ID.

### Body (application/json)

This endpoint expects an object.

- `oldPin` (string, optional)
- `newPin` (string, optional)

## Errors

### 400 Bad Request Error

Not available / Missing fields

- `status` (string, optional)
- `message` (string, optional)

### 401 Unauthorized Error

Unauthorized

- `message` (string, optional)

### 403 Forbidden Error

Invalid or expired access token / KYB not approved / Account deactivated

- `message` (string, optional)
- `code` (string, optional)
- `kybStatus` (string, optional)

## Examples

**Request**

```json
{
  "oldPin": "1234",
  "newPin": "5678"
}
```

**SDK Code**

```python Card Issuing_changeCardPIN_example
import requests

url = "https://shimi-waas-api-9493532b9281.herokuapp.com/api/v1/card/change-pin/cardId"

payload = {
    "oldPin": "1234",
    "newPin": "5678"
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.json())
```

```javascript Card Issuing_changeCardPIN_example
const url = 'https://shimi-waas-api-9493532b9281.herokuapp.com/api/v1/card/change-pin/cardId';
const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: '{"oldPin":"1234","newPin":"5678"}'
};

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

```go Card Issuing_changeCardPIN_example
package main

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

func main() {

	url := "https://shimi-waas-api-9493532b9281.herokuapp.com/api/v1/card/change-pin/cardId"

	payload := strings.NewReader("{\n  \"oldPin\": \"1234\",\n  \"newPin\": \"5678\"\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Authorization", "Bearer <token>")
	req.Header.Add("Content-Type", "application/json")

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

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

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

}
```

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

url = URI("https://shimi-waas-api-9493532b9281.herokuapp.com/api/v1/card/change-pin/cardId")

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

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"oldPin\": \"1234\",\n  \"newPin\": \"5678\"\n}"

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

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

HttpResponse<String> response = Unirest.post("https://shimi-waas-api-9493532b9281.herokuapp.com/api/v1/card/change-pin/cardId")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"oldPin\": \"1234\",\n  \"newPin\": \"5678\"\n}")
  .asString();
```

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

$client = new \GuzzleHttp\Client();

$response = $client->request('POST', 'https://shimi-waas-api-9493532b9281.herokuapp.com/api/v1/card/change-pin/cardId', [
  'body' => '{
  "oldPin": "1234",
  "newPin": "5678"
}',
  'headers' => [
    'Authorization' => 'Bearer <token>',
    'Content-Type' => 'application/json',
  ],
]);

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

```csharp Card Issuing_changeCardPIN_example
using RestSharp;

var client = new RestClient("https://shimi-waas-api-9493532b9281.herokuapp.com/api/v1/card/change-pin/cardId");
var request = new RestRequest(Method.POST);
request.AddHeader("Authorization", "Bearer <token>");
request.AddHeader("Content-Type", "application/json");
request.AddParameter("application/json", "{\n  \"oldPin\": \"1234\",\n  \"newPin\": \"5678\"\n}", ParameterType.RequestBody);
IRestResponse response = client.Execute(request);
```

```swift Card Issuing_changeCardPIN_example
import Foundation

let headers = [
  "Authorization": "Bearer <token>",
  "Content-Type": "application/json"
]
let parameters = [
  "oldPin": "1234",
  "newPin": "5678"
] as [String : Any]

let postData = JSONSerialization.data(withJSONObject: parameters, options: [])

let request = NSMutableURLRequest(url: NSURL(string: "https://shimi-waas-api-9493532b9281.herokuapp.com/api/v1/card/change-pin/cardId")! as URL,
                                        cachePolicy: .useProtocolCachePolicy,
                                    timeoutInterval: 10.0)
request.httpMethod = "POST"
request.allHTTPHeaderFields = headers
request.httpBody = postData as Data

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()
```