curl --request POST \
  --url https://sandbox-payment-b2b.singapay.id/api/v1.0/cardless-withdrawals/cancel \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --header 'X-PARTNER-ID: <api-key>' \
  --data '
{
  "account_id": "01K946KF851RK7FX075GJHBVKF",
  "reference_number": "REF-20260610-001",
  "reason": "Customer requested cancellation"
}
'

import requests

url = "https://sandbox-payment-b2b.singapay.id/api/v1.0/cardless-withdrawals/cancel"

payload = {
    "account_id": "01K946KF851RK7FX075GJHBVKF",
    "reference_number": "REF-20260610-001",
    "reason": "Customer requested cancellation"
}
headers = {
    "Authorization": "Bearer <token>",
    "X-PARTNER-ID": "<api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {
    Authorization: 'Bearer <token>',
    'X-PARTNER-ID': '<api-key>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    account_id: '01K946KF851RK7FX075GJHBVKF',
    reference_number: 'REF-20260610-001',
    reason: 'Customer requested cancellation'
  })
};

fetch('https://sandbox-payment-b2b.singapay.id/api/v1.0/cardless-withdrawals/cancel', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://sandbox-payment-b2b.singapay.id/api/v1.0/cardless-withdrawals/cancel",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'account_id' => '01K946KF851RK7FX075GJHBVKF',
    'reference_number' => 'REF-20260610-001',
    'reason' => 'Customer requested cancellation'
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json",
    "X-PARTNER-ID: <api-key>"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

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

func main() {

	url := "https://sandbox-payment-b2b.singapay.id/api/v1.0/cardless-withdrawals/cancel"

	payload := strings.NewReader("{\n  \"account_id\": \"01K946KF851RK7FX075GJHBVKF\",\n  \"reference_number\": \"REF-20260610-001\",\n  \"reason\": \"Customer requested cancellation\"\n}")

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

	req.Header.Add("Authorization", "Bearer <token>")
	req.Header.Add("X-PARTNER-ID", "<api-key>")
	req.Header.Add("Content-Type", "application/json")

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

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

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://sandbox-payment-b2b.singapay.id/api/v1.0/cardless-withdrawals/cancel")
  .header("Authorization", "Bearer <token>")
  .header("X-PARTNER-ID", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"account_id\": \"01K946KF851RK7FX075GJHBVKF\",\n  \"reference_number\": \"REF-20260610-001\",\n  \"reason\": \"Customer requested cancellation\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://sandbox-payment-b2b.singapay.id/api/v1.0/cardless-withdrawals/cancel")

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

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["X-PARTNER-ID"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"account_id\": \"01K946KF851RK7FX075GJHBVKF\",\n  \"reference_number\": \"REF-20260610-001\",\n  \"reason\": \"Customer requested cancellation\"\n}"

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

{
  "response_code": "SP000",
  "response_message": "Successfully",
  "data": {
    "transaction_id": "CW-20251024-0001",
    "reference_number": "REF-20260610-001",
    "transaction_status": {
      "code": "05",
      "desc": "Canceled"
    },
    "post_timestamp": "1766978961000",
    "processed_timestamp": "1766979561000",
    "expired_at": "1766979561000",
    "customer": {
      "id": "CUST-00123",
      "name": "Budi Santoso"
    },
    "otp_number": "",
    "vendor_code": "CLWD_BRI",
    "gross_amount": {
      "currency": "IDR",
      "value": "508000"
    },
    "fee": {
      "currency": "IDR",
      "value": "8000"
    },
    "net_amount": {
      "currency": "IDR",
      "value": "500000"
    },
    "balance_after": {
      "currency": "IDR",
      "value": "1500000"
    }
  }
}

{
  "response_code": "SP009",
  "response_message": "Transaction Not Found",
  "data": {
    "message": "Transaction with status Initiated (open) not found"
  }
}

{
  "response_code": "SP018",
  "response_message": "Validation error",
  "data": {
    "account_id": "01K946KF851RK7FX075GJHBVKF",
    "reference_number": "REF-20260610-001",
    "reason": null,
    "message": "Validation error 'reason': 'The reason field is required.'"
  }
}

{
  "response_code": "SP002",
  "response_message": "General Failure",
  "data": {
    "message": "Feature Unavailable yet"
  }
}