MT5 backtesting error: '"ERROR: Server error. Sending order to server again"

Backtesting
#1

Hi,

Does anyone know the reason for the error during backtestign in MT5

“ERROR: Server error. Sending order to server again”

My code is correct as I can backtest without problems for periods Sep’17 - Jan’18 but when I am trying to backtest [for futures] data from Jan’17 - Mar’17, then it is giving me this error.

When I test visually, then it does show the chart data but gives error when placing the order.

#2

Are you sure this message doesn’t come from your code ? I am almost sure it is.

Backtesting without problem on an other period doesn’t mean you can’t have this error on an other period.

#3

Ok, it is coming from my code, but on these conditions:

     if(errorcode_bn==TRADE_RETCODE_CONNECTION 

         || errorcode_bn==TRADE_RETCODE_TIMEOUT

         || errorcode_bn==TRADE_RETCODE_INVALID_PRICE

         || errorcode_bn==TRADE_RETCODE_PRICE_OFF

         || errorcode_bn==TRADE_RETCODE_PRICE_CHANGED

         || errorcode_bn==TRADE_RETCODE_REQUOTE

         || errorcode_bn==TRADE_RETCODE_REJECT

         || errorcode_bn==TRADE_RETCODE_ERROR

         || errorcode_bn==TRADE_RETCODE_INVALID

         || errorcode_bn==TRADE_RETCODE_INVALID_VOLUME

         || errorcode_bn==TRADE_RETCODE_INVALID_STOPS

         || errorcode_bn==TRADE_RETCODE_INVALID_FILL

       )

Again my code is correct as it runs on other periods…

#4

No it’s not, as it gives you a useless error message.

Check what is the exact error and manage it, the above errors are very different.

#5

Ok In Backtesting for the expired futures symbol, it gives the error:


ErrorCode: TRADE_RETCODE_INVALID_FILL

It was working fine until 1 or 2 days ago.

#6

For everyone’s benefit, the issue was resolved by setting in the code, trade.setfillingtype(ORDER_FILLING_RETURN) , just before calling trade.PositionOpen request…

#7

Yes and the next time it will change (the filling type allowed), you will get an error again.