Форум

\Bitrix\Main\EventManager::getInstance()->addEventHandler('sale', 'OnBeforeSaleShipmentItemEntityDeleted', ['Handler', 'OnSaleStatusOrderChange']);
class Handler {
    function OnSaleStatusOrderChange($event)
    {
        $parameters = $event->getParameters();

        $fileLog = $_SERVER["DOCUMENT_ROOT"].'/local/logs/shipment/OnBeforeCollectionDeleteItem_log.txt';

        $strLog = date('d.m.Y H:i:s').json_encode($parameters)."\n";

        file_put_contents($fileLog, $strLog, FILE_APPEND);
        
    }
}