curl --request POST \
  --url https://receipts.opencard.io/api/v1/marcet/callbackrequests \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
[
  {
    "callback_path": "/transaction/123456789",
    "callback_content_type": "text/xml",
    "transaction": {
      "id": "txn_001",
      "auth_amount": 99.95,
      "auth_currency": "SEK",
      "auth_date": "2026-06-08",
      "auth_time": "11:12:14",
      "auth_timezone": "Europe/Stockholm",
      "reference_no": "190102519907",
      "auth_code": "ABC123",
      "terminal_id": "0000000015745355",
      "merchant_no": "3462188",
      "merchant_name": "Espresso House",
      "merchant_country": "SE",
      "clearing": "false",
      "auth_masked_card_number": "****1234",
      "type": "CARD_PURCHASE",
      "state": "AUTHORIZED",
      "mcc": "5814"
    }
  }
]
'

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify([
    {
      callback_path: '/transaction/123456789',
      callback_content_type: 'text/xml',
      transaction: {
        id: 'txn_001',
        auth_amount: 99.95,
        auth_currency: 'SEK',
        auth_date: '2026-06-08',
        auth_time: '11:12:14',
        auth_timezone: 'Europe/Stockholm',
        reference_no: '190102519907',
        auth_code: 'ABC123',
        terminal_id: '0000000015745355',
        merchant_no: '3462188',
        merchant_name: 'Espresso House',
        merchant_country: 'SE',
        clearing: 'false',
        auth_masked_card_number: '****1234',
        type: 'CARD_PURCHASE',
        state: 'AUTHORIZED',
        mcc: '5814'
      }
    }
  ])
};

fetch('https://receipts.opencard.io/api/v1/marcet/callbackrequests', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://receipts.opencard.io/api/v1/marcet/callbackrequests"

payload = [
    {
        "callback_path": "/transaction/123456789",
        "callback_content_type": "text/xml",
        "transaction": {
            "id": "txn_001",
            "auth_amount": 99.95,
            "auth_currency": "SEK",
            "auth_date": "2026-06-08",
            "auth_time": "11:12:14",
            "auth_timezone": "Europe/Stockholm",
            "reference_no": "190102519907",
            "auth_code": "ABC123",
            "terminal_id": "0000000015745355",
            "merchant_no": "3462188",
            "merchant_name": "Espresso House",
            "merchant_country": "SE",
            "clearing": "false",
            "auth_masked_card_number": "****1234",
            "type": "CARD_PURCHASE",
            "state": "AUTHORIZED",
            "mcc": "5814"
        }
    }
]
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://receipts.opencard.io/api/v1/marcet/callbackrequests",
  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([
    [
        'callback_path' => '/transaction/123456789',
        'callback_content_type' => 'text/xml',
        'transaction' => [
                'id' => 'txn_001',
                'auth_amount' => 99.95,
                'auth_currency' => 'SEK',
                'auth_date' => '2026-06-08',
                'auth_time' => '11:12:14',
                'auth_timezone' => 'Europe/Stockholm',
                'reference_no' => '190102519907',
                'auth_code' => 'ABC123',
                'terminal_id' => '0000000015745355',
                'merchant_no' => '3462188',
                'merchant_name' => 'Espresso House',
                'merchant_country' => 'SE',
                'clearing' => 'false',
                'auth_masked_card_number' => '****1234',
                'type' => 'CARD_PURCHASE',
                'state' => 'AUTHORIZED',
                'mcc' => '5814'
        ]
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json"
  ],
]);

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

curl_close($curl);

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

[
  {
    "callback_path": "/transaction/123456789",
    "callback_content_type": "text/xml",
    "transaction": {
      "id": "txn_001",
      "auth_amount": 99.95,
      "auth_currency": "SEK",
      "auth_date": "2026-06-08",
      "auth_time": "11:12:14",
      "auth_timezone": "Europe/Stockholm",
      "reference_no": "190102519907",
      "auth_code": "ABC123",
      "terminal_id": "0000000015745355",
      "merchant_no": "3462188",
      "merchant_name": "Espresso House",
      "merchant_country": "SE",
      "clearing": "false",
      "auth_masked_card_number": "****1234",
      "type": "CARD_PURCHASE",
      "state": "AUTHORIZED",
      "mcc": "5814"
    }
  }
]