How to prohibit order cancellation on Bitrix?

Question

1C-Bitrix

Good afternoon!
There was a question, how to prohibit changing the order status to "Cancelled"?
The essence of the problem is that a ban on changing the status of an order is now implemented if the order is "sent" or "delivered".
But changing from "shipped" to "delivered" also fails
. How can I prevent orders with the status "shipped" or "delivered" from changing the status to "cancelled"?

use Bitrix\Main;

Main\EventManager::getInstance()->addEventHandler(
    'sale',
    'OnSaleOrderBeforeSaved',
    'onSaleOrderBeforeSavedHandler'
);

function onSaleOrderBeforeSavedHandler(Main\Event $event)
{
    global $USER;

    /* @var Order $order */
    $order = $event->getParameter("ENTITY");
    $oldValues = $event->getParameter("VALUES");
    $isNew = $event->getParameter("IS_NEW");

    if (!$isNew) {
        $userGroups = $USER->GetUserGroupArray();

        if ($order->getField('STATUS_ID') === 'J' || $order->getField('STATUS_ID') === 'V') {

            return new \Bitrix\Main\EventResult(
                \Bitrix\Main\EventResult::ERROR,
                new \Bitrix\Sale\ResultError('Редактирование заказа запрещено'),
                'sale'
            );

        }

    }
}

Answer 1

I came across this page looking for a solution.
You need to use the action before changing OnSaleBeforeStatusOrderChange to cancel it, in OnSaleOrderBeforeSaved the saving has already happened and you can only set it again