Алексей Волков (Все сообщения пользователя)

\Bitrix\Main\EventManager::getInstance()->addEventHandler('sale', 'OnSalePaymentSetField', 'changePay');

function changePay(\Bitrix\Main\Event $event)
{
    $arParameters = $event->getParameters();
    if($arParameters['NAME']=='PAY_SYSTEM_ID'){
        if($arParameters['VALUE']!=$arParameters['OLD_VALUE']) {          //это условие при смене платежки всегда отрабатывает  

            \Bitrix\Main\Loader::includeModule('sale');

            $orderEnt = $event->getParameter("ENTITY");
            $arPayVals = $orderEnt->getFields()->getValues();
            
                $order = \Bitrix\Sale\Order::load($arPayVals['ORDER_ID']);

                $discount = $order->getDiscount();
                \Bitrix\Sale\DiscountCouponsManager::clearApply(true);
                \Bitrix\Sale\DiscountCouponsManager::useSavedCouponsForApply(true);
                $discount->setOrderRefresh(true);
                $discount->setApplyResult(array());

                
                if (!($basket = $order->getBasket())) {
                    file_put_contents($_SERVER["DOCUMENT_ROOT"] . "/upload/log/changePay.txt", "\n\n** " . date("d.m.Y H:i:s") . " ****" . __FILE__ . " " . __LINE__ . "\n" . print_r([$arPayVals['ORDER_ID'],'no basket'], true), FILE_APPEND | LOCK_EX);
                }

                $basket->refreshData(array('PRICE', 'COUPONS'));
                $discount->calculate();
                $order->save();

        }
    }
}

$arFields = array(
                            "PAY_SYSTEM_ID" => 1
                        );
\CSaleOrder::Update($oId, $arFields);

\Bitrix\Main\EventManager::getInstance()->addEventHandler('sale', 'OnSalePaymentSetField', 'changePay');
function changePay(\Bitrix\Main\Event $event)
{
    $arParameters = $event->getParameters();
    if($arParameters['NAME']=='PAY_SYSTEM_ID'){
       if(($arParameters['VALUE']==7 && $arParameters['OLD_VALUE']==4) || ($arParameters['VALUE']==6 && $arParameters['OLD_VALUE']==7)) {
            \Bitrix\Main\Loader::includeModule('sale');

            $orderEnt = $event->getParameter("ENTITY");
            $arPayVals = $orderEnt->getFields()->getValues();
            
                $order = \Bitrix\Sale\Order::load($arPayVals['ORDER_ID']);

                $discount = $order->getDiscount();
                \Bitrix\Sale\DiscountCouponsManager::clearApply(true);
                \Bitrix\Sale\DiscountCouponsManager::useSavedCouponsForApply(true);
                $discount->setOrderRefresh(true);
                $discount->setApplyResult(array());
                $basket->refreshData(array('PRICE', 'COUPONS'));
                $discount->calculate();
                $order->save();
            }
        }
    }

$cagfilter['NAME'] = "%".trim($_REQUEST['innorname'])."%";

$arFilter = Array(
           "BASKET_DISCOUNT_COUPON" => $coupon['COUPON'],
           );
         $rsSales = CSaleOrder::GetList(array("DATE_INSERT" => "ASC"), $arFilter);
...
далее вытаскиваем id того кто создал заказ и CUser::GetList -> и сохраняем все в файл