irecurring.php

См. документацию.

<?php
 
namespace Bitrix\Sale\PaySystem;
 
use Bitrix\Main\Request,
    Bitrix\Sale\Payment;

interface IRecurring
{
    public function repeatRecurrent(Payment $payment, Request $request = null): ServiceResult;

    public function cancelRecurrent(Payment $payment, Request $request = null): ServiceResult;

    public function isRecurring(Payment $payment): bool;
}