Change landing page for an existing transaction

Example request

PHP

<?php

$shopId = ""; // Payment Point ID
$secretPhrase = ""; // Payment Point Secret
$orderId = ""; // Order ID
$mainUrl = "https://pay.cashbill.pl/ws/rest";
$ch = curl_init();


$modifyRequest = array(
    "returnUrl" => "https://cashbill.pl/ok",
    "negativeReturnUrl" => "https://cashbill.pl/err",
);

$modifyRequest['sign'] = sha1($orderId . $modifyRequest['returnUrl'] . $modifyRequest['negativeReturnUrl'] . $secretPhrase);

curl_setopt_array($ch, array(
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_CUSTOMREQUEST => "PUT",
    CURLOPT_URL => "{$mainUrl}/payment/{$shopId}/{$orderId}",
    CURLOPT_HTTPHEADER =>  array("Content-Type: application/json"),
    CURLOPT_POSTFIELDS => json_encode($modifyRequest)
));

$ret = curl_exec($ch);
$response = json_decode($ret);

if (curl_getinfo($ch, CURLINFO_HTTP_CODE) != "204") {
    echo "Error message: {$response->errorMessage}";
} else {
    echo "Done";
}