handler.php

См. документацию.

<?php
 
namespace Sale\Handlers\PaySystem;
 
use Bitrix\Main\Request;
use Bitrix\Sale;
use Bitrix\Sale\PaySystem;
 
class SberbankHandler extends PaySystem\BaseServiceHandler
{
    public function initiatePay(Sale\Payment $payment, Request $request = null)
    {
        return $this->showTemplate($payment, "template");
    }

    public function getCurrencyList()
    {
        return array('RUB');
    }
}