Hello,

I've written a little method to mass close all filled positions:

public void closeAllPositions(){
        try{
            List<IOrder> orders = engine.getOrders();
            List<IOrder> QFXOrders = new ArrayList<IOrder>();
            //Filter all QFX orders
            for(IOrder o : orders){
                String orderLabelHeader = (o.getLabel()).substring(0,3);
                if(orderLabelHeader.equals("QFX")){
                    if(o.getState() == IOrder.State.FILLED){
                        QFXOrders.add(o);
                    }
                }
            }
            //Close QFX orders
            if(QFXOrders.isEmpty() == false){
                engine.closeOrders(QFXOrders.toArray(new IOrder[QFXOrders.size()]));
            }
        } catch (JFException e){
            consolePrint("Error closing order: "+e);
        }
    }

This code will only close one position, since I get the following error message(this is no exception I think):

15:10:06 Mass close failed, wrong order for mass close, positionId: 35672820

What is meant with "wrong order"?

Thanks for help,
Juergen

Hello support,

why has this topic been moved to the bug section?
Is this really a bug or a faulty programming on my side?
Please confirm this either way since I may concentrate on other things in the meantime.

Thanks and best regards,
Juergen

This means that the issue is under investigation.

Hello Support,

I'm now at a point where I would need to mass close positions from my strategy.
How can I overcome this problem?
Is it ok to close all orders in a loop?
What are the disadvantages of such a solution?
Does a loop solution take more time on the trading server to close the positions than it would take with a mass close?
It would be very nice if you could provide a template solution with a loop.

Best regards,
Juergen

Yes.
In principle the functionality is very similar.
See:
https://www.dukascopy.com/wiki/#Order_Management/Print_and/or_close_orders_by_group

Thank you for this example, I will try this.
Let me tell you that in the meantime I've made some code changes on the strategy and until now the mass closing of orders does work.
So maybe the error message was caused by a faulty programming on my side but I still don't see why.

Kind regrads,
Juergen

The reason of this message is following:
Strategy tries to close the same order(s) more than one time.

Strategy must always "wait for update" for every order when its state will change
https://www.dukascopy.com/wiki/#Manage_Order_State/Use_IOrder.waitForUpdate
E.g.:

engine.closeOrders(orders); 
            for (IOrder o : orders){ 
                o.waitForUpdate(2, TimeUnit.SECONDS, State.CANCELED, State.CLOSED); // wait couple of seconds for order close 
            } 

See more here:
https://www.dukascopy.com/wiki/#Manage_Order_State