Important information

The API reference is now available here.
The deprecated API reference is available here.


Manage TWINT payment

Manage TWINT transactions.

After the successful charge transaction, you can perform additional operations on the payment resource. Some of the important ones are described in the following section.

For a full reference of managing payments, go to relevant server-side integration documentation page: Manage API resources (direct API calls), Manage API resources (PHP SDK), or Manage API resources (Java SDK).

Cancel after payment (refund)

You can refund up to the amount of the received payment. To do this, you have to make a cancel transaction for an existing charge transaction.

$unzer = new Unzer('s-priv-xxxxxxxxxx');

$cancel = $unzer->cancelChargedPayment('s-pay-1', new Cancellation(10.00));
Unzer unzer = new Unzer("s-priv-xxxxxxxxxx");

Cancel cancel = unzer.cancelCharge("s-pay-1", new BigDecimal("10.00"));

The response looks similar to the following example:

  "id": "s-cnl-1",
  "isSuccess": true,
  "isPending": false,
  "isResumed": false,
  "isError": false,
  "card3ds": false,
  "message": {
    "code": "COR.000.000.000",
    "merchant": "Transaction succeeded",
    "customer": "Your payments have been successfully processed."
  "amount": "10.0000",
  "currency": "CHF",
  "date": "2024-04-16 08:22:46",
  "resources": {
    "customerId": "",
    "paymentId": "s-pay-5",
    "basketId": "",
    "metadataId": "",
    "payPageId": "",
    "traceId": "6c3d421d0573d5dcf351d35f2514d57f",
    "typeId": "s-twt-npwvzkmfsnza"
  "paymentReference": "",
  "processing": {
    "uniqueId": "176a2553.03c8.493c.b453.dac1c91440cf",
    "shortId": "8777.5842.1376",
    "traceId": "6c3d421d0573d5dcf351d35f2514d57f"