Windows Service Bus LockDuration Property which value

Hy,

I have a question regarding the LockDuration Property. I have this receive function:

// Use the MessagingFactory to create a queue client for the orderqueue.
QueueClient queueClient = factory.CreateQueueClient("orderqueue");

// Receive messages from the queue with a 10 second timeout.
while (true)
{
    // Receive a message using a 10 second timeout
    BrokeredMessage msg = queueClient.Receive(TimeSpan.FromSeconds(10));
    
    if (msg != null)
    {
        // Deserialize the message body to an order data contract.
        Order order = msg.GetBody<Order>();
        // Output the order.
        Console.WriteLine("{0} {1} {2} {3} {4} ${5}",
        order.OrderNumber,
        order.Customer.FirstName,
        order.Customer.LastName,
        order.ShipTo.City,
        order.ShipTo.Province,
        order.Total);
        // Update the database
        try
        {
            // Add the order to the database.
            OrdersData.AddOrder(order);
            // Mark the message as complete.
            msg.Complete();
        }
        catch (Exception ex)
        {
            Console.WriteLine("Exception: {0}", ex.Message);
            // Something went wrong, abandon the message.
            msg.Abandon();
        }
    }
    else
    {
        // No message has been received, we will poll for more messages.
        Console.WriteLine("Polling, polling, polling...");
    }
}

If I receive a message like in the example above. I delete the message with the Complete() function if everything is ok. If something went wrong I call the Abondon() function, so the message gets unlocked. So my queustion:

There is the QueueDescription.LockDuration Property and SubscriptionDescription.LockDuration Property to set the lock duration of a message when I use the peeklock recevie mode. You can change it to 5 minutes. Somewhere I read you should set the value of this proberty carefully. Why I shouldn't set it to the 5 minutes, because the message is unlocked anyway if there is an error with the abandom() function (see the catch block in the code example).

Best regards