curl --request POST \
  --url https://api-sandbox.uqpaytech.com/api/v1/simulation/issuing/reversal \
  --header 'Content-Type: application/json' \
  --header 'x-auth-token: <api-key>' \
  --header 'x-idempotency-key: <x-idempotency-key>' \
  --data '
{
  "transaction_id": "d110124a-069f-478f-9f49-5a92085b1d90"
}
'

import requests

url = "https://api-sandbox.uqpaytech.com/api/v1/simulation/issuing/reversal"

payload = { "transaction_id": "d110124a-069f-478f-9f49-5a92085b1d90" }
headers = {
    "x-idempotency-key": "<x-idempotency-key>",
    "x-auth-token": "<api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {
    'x-idempotency-key': '<x-idempotency-key>',
    'x-auth-token': '<api-key>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({transaction_id: 'd110124a-069f-478f-9f49-5a92085b1d90'})
};

fetch('https://api-sandbox.uqpaytech.com/api/v1/simulation/issuing/reversal', 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://api-sandbox.uqpaytech.com/api/v1/simulation/issuing/reversal",
  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([
    'transaction_id' => 'd110124a-069f-478f-9f49-5a92085b1d90'
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "x-auth-token: <api-key>",
    "x-idempotency-key: <x-idempotency-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://api-sandbox.uqpaytech.com/api/v1/simulation/issuing/reversal"

	payload := strings.NewReader("{\n  \"transaction_id\": \"d110124a-069f-478f-9f49-5a92085b1d90\"\n}")

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

	req.Header.Add("x-idempotency-key", "<x-idempotency-key>")
	req.Header.Add("x-auth-token", "<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://api-sandbox.uqpaytech.com/api/v1/simulation/issuing/reversal")
  .header("x-idempotency-key", "<x-idempotency-key>")
  .header("x-auth-token", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"transaction_id\": \"d110124a-069f-478f-9f49-5a92085b1d90\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api-sandbox.uqpaytech.com/api/v1/simulation/issuing/reversal")

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

request = Net::HTTP::Post.new(url)
request["x-idempotency-key"] = '<x-idempotency-key>'
request["x-auth-token"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"transaction_id\": \"d110124a-069f-478f-9f49-5a92085b1d90\"\n}"

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

{
  "authorization_code": "W6PPD7",
  "billing_amount": "1",
  "billing_currency": "SGD",
  "card_available_balance": "1760.2",
  "card_id": "e3577e62-5526-4284-a5b7-f718d83654ee",
  "card_number": "************9892",
  "cardholder_id": "3a1d3ce4-977b-4f1d-8076-8d2dd59e942c",
  "failure_reason": "",
  "merchant_data": {
    "category_code": "5734",
    "city": "",
    "country": "",
    "name": "Sandbox Contract Regression"
  },
  "origin_transaction_id": "d110124a-069f-478f-9f49-5a92085b1d90",
  "posted_time": "2026-09-10T11:17:54.626009288+08:00",
  "transaction_amount": "1",
  "transaction_currency": "SGD",
  "transaction_id": "2a05abbc-c4db-4fed-88ec-580afd0efa47",
  "transaction_status": "APPROVED",
  "transaction_time": "2026-09-10T11:17:54.626016332+08:00",
  "transaction_type": "REVERSAL"
}