curl --request POST \
  --url https://nayax-spark-dmz.nayax.com/api/ExternalCancel \
  --header 'Content-Type: application/json' \
  --data '
{
  "NayaxTransactionId": 987654321,
  "SparkTransactionId": "f8e7d6c5-b4a3-2109-fedc-ba9876543210",
  "SiteId": 2,
  "MachineAuTime": "20251212110000500",
  "TerminalId": "NX0087654321",
  "TerminalIdType": 1,
  "CancellationType": 1,
  "ReasonCode": "01",
  "ReasonText": "User requested cancellation",
  "CancelAmount": 5
}
'

import requests

url = "https://nayax-spark-dmz.nayax.com/api/ExternalCancel"

payload = {
    "NayaxTransactionId": 987654321,
    "SparkTransactionId": "f8e7d6c5-b4a3-2109-fedc-ba9876543210",
    "SiteId": 2,
    "MachineAuTime": "20251212110000500",
    "TerminalId": "NX0087654321",
    "TerminalIdType": 1,
    "CancellationType": 1,
    "ReasonCode": "01",
    "ReasonText": "User requested cancellation",
    "CancelAmount": 5
}
headers = {"Content-Type": "application/json"}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {'Content-Type': 'application/json'},
  body: JSON.stringify({
    NayaxTransactionId: 987654321,
    SparkTransactionId: 'f8e7d6c5-b4a3-2109-fedc-ba9876543210',
    SiteId: 2,
    MachineAuTime: '20251212110000500',
    TerminalId: 'NX0087654321',
    TerminalIdType: 1,
    CancellationType: 1,
    ReasonCode: '01',
    ReasonText: 'User requested cancellation',
    CancelAmount: 5
  })
};

fetch('https://nayax-spark-dmz.nayax.com/api/ExternalCancel', 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://nayax-spark-dmz.nayax.com/api/ExternalCancel",
  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([
    'NayaxTransactionId' => 987654321,
    'SparkTransactionId' => 'f8e7d6c5-b4a3-2109-fedc-ba9876543210',
    'SiteId' => 2,
    'MachineAuTime' => '20251212110000500',
    'TerminalId' => 'NX0087654321',
    'TerminalIdType' => 1,
    'CancellationType' => 1,
    'ReasonCode' => '01',
    'ReasonText' => 'User requested cancellation',
    'CancelAmount' => 5
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($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://nayax-spark-dmz.nayax.com/api/ExternalCancel"

	payload := strings.NewReader("{\n  \"NayaxTransactionId\": 987654321,\n  \"SparkTransactionId\": \"f8e7d6c5-b4a3-2109-fedc-ba9876543210\",\n  \"SiteId\": 2,\n  \"MachineAuTime\": \"20251212110000500\",\n  \"TerminalId\": \"NX0087654321\",\n  \"TerminalIdType\": 1,\n  \"CancellationType\": 1,\n  \"ReasonCode\": \"01\",\n  \"ReasonText\": \"User requested cancellation\",\n  \"CancelAmount\": 5\n}")

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

	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://nayax-spark-dmz.nayax.com/api/ExternalCancel")
  .header("Content-Type", "application/json")
  .body("{\n  \"NayaxTransactionId\": 987654321,\n  \"SparkTransactionId\": \"f8e7d6c5-b4a3-2109-fedc-ba9876543210\",\n  \"SiteId\": 2,\n  \"MachineAuTime\": \"20251212110000500\",\n  \"TerminalId\": \"NX0087654321\",\n  \"TerminalIdType\": 1,\n  \"CancellationType\": 1,\n  \"ReasonCode\": \"01\",\n  \"ReasonText\": \"User requested cancellation\",\n  \"CancelAmount\": 5\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://nayax-spark-dmz.nayax.com/api/ExternalCancel")

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

request = Net::HTTP::Post.new(url)
request["Content-Type"] = 'application/json'
request.body = "{\n  \"NayaxTransactionId\": 987654321,\n  \"SparkTransactionId\": \"f8e7d6c5-b4a3-2109-fedc-ba9876543210\",\n  \"SiteId\": 2,\n  \"MachineAuTime\": \"20251212110000500\",\n  \"TerminalId\": \"NX0087654321\",\n  \"TerminalIdType\": 1,\n  \"CancellationType\": 1,\n  \"ReasonCode\": \"01\",\n  \"ReasonText\": \"User requested cancellation\",\n  \"CancelAmount\": 5\n}"

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

{
  "SparkTransactionId": "f8e7d6c5-b4a3-2109-fedc-ba9876543210",
  "Status": {
    "Verdict": "<string>",
    "ErrorCode": 123,
    "ErrorDescription": "<string>",
    "StatusMessage": "<string>"
  },
  "AuthCode": "D4E5F6",
  "MachineAuTime": "20251212110000500"
}