Datatrans QR Code Test - creating QR code from redirect link

JSON request:
{
    "currency": "CHF",
    "refno": "1672871",
    "amount": 650,
    "language": "en",
    "redirect": {
        "method": "POST",
        "successUrl": "https://pay.sandbox.datatrans.com/upp/merchant/successPage.jsp?a=b",
        "cancelUrl": "https://pay.sandbox.datatrans.com/upp/merchant/cancelPage.jsp?a=b",
        "errorUrl": "https://pay.sandbox.datatrans.com/upp/merchant/errorPage.jsp?a=b"
    },
    "webhook": {
        "url": "https://www.webhook.com/test/webhook.php?sessionId=7f3d3864-d260-44fd-853c-6310fdf77d2b"
    }
}

Response:
HTTP/1.1 201
Server: nginx
Date: Thu, 11 Dec 2025 19:14:46 GMT
Content-Type: application/json
Content-Length: 44
Connection: keep-alive
Strict-Transport-Security: max-age=31536000; includeSubdomains
P3P: CP="IDC DSP COR ADM DEVi TAIi PSA PSD IVAi IVDi CONi HIS OUR IND CNT"
X-XSS-Protection: 1; mode=block
Location: https://pay.sandbox.datatrans.com/v1/start/251211201446955229
Correlation-Id: 7e89cfbc-01b4-4785-a56c-6f2d7e00657c

{ "transactionId" : "251211201446955229" }

Redirect link:
https://pay.sandbox.datatrans.com/v1/start/251211201446955229
(click for QR Code)"

Test cards: https://docs.datatrans.ch/docs/testing-credentials#section-credit-debit-cards