'Unsupported Filling Mode' error while sending order from Python API to Meta Trader 5

External question — Stack Overflow Stack Exchange Author: M.Rafi Biglari Original post: https://stackoverflow.com/questions/75859321 License: CC BY-SA 4.0 — https://creativecommons.org/licenses/by-sa/4.0/ Adaptation: HTML converted to plain text; contact email addresses removed. I am developing a Python program. When I try to send an order from Python to Meta Trader 5 (Alpari broker), I get an error: Unsupported Filling Mode I tried the following code: # Import the libraries import MetaTrader5 as mt5 from datetime import datetime # Create the bound between MT5 and Python mt5.initialize() # Place buy order # Initialization value symbol = "EURUSD" lot = 0.01 # Choose the deviation deviation = 10 # Find the filling mode of symbol filling_type = mt5.symbol_info(symbol).filling_mode # Create dictionary request request = { "action": mt5.TRADE_ACTION_DEAL, "symbol": symbol, "volume": lot, "type": mt5.ORDER_TYPE_SELL, "price": mt5.symbol_info_tick(symbol).bid, "deviation": deviation, "type_filling": filling_type, "type_time": mt5.ORDER_TIME_GTC } mt5.order_check(request) The result was as below: OrderCheckResult(retcode=10030, balance=0.0, equity=0.0, profit=0.0, margin=0.0, margin_free=0.0, margin_level=0.0, comment='Unsupported filling mode', request=TradeRequest(action=1, magic=0, order=0, symbol='EURUSD', volume=0.01, price=1.0793, stoplimit=0.0, sl=0.0, tp=0.0, deviation=10, type=1, type_filling=1, type_time=0, expiration=0, comment='', position=0, position_by=0)) Can anyone help me to make this problem fixed? How I can translate the SYMBOL_FILLING_MODE to the ENUM_ORDER_TYPE_FILLING value? Thanks in advance!

External answer — Stack Overflow Stack Exchange Author: soroush Original post: https://stackoverflow.com/a/75870989 License: CC BY-SA 4.0 — https://creativecommons.org/licenses/by-sa/4.0/ Adaptation: HTML converted to plain text; contact email addresses removed. It may be that your order type is not supported or the stop/tp/lot are too small. In your case it could be because there is no money in the account. Try to do the same with a demo account that has money and see if you sill get the same error Also check if your take profit or stop loss are too close to the opening price Here is a list of your options. ORDER_TYPE_BUY ORDER_TYPE_SELL ORDER_TYPE_BUY_LIMIT ORDER_TYPE_SELL_LIMIT ORDER_TYPE_BUY_STOP ORDER_TYPE_SELL_STOP ORDER_TYPE_BUY_STOP_LIMIT ORDER_TYPE_SELL_STOP_LIMIT ORDER_TYPE_CLOSE_BY

External answer — Stack Overflow Stack Exchange Author: Eugeny Nik Original post: https://stackoverflow.com/a/76339333 License: CC BY-SA 4.0 — https://creativecommons.org/licenses/by-sa/4.0/ Adaptation: HTML converted to plain text; contact email addresses removed. Simple add to request "type_filling": mt5.SYMBOL_FILLING_IOC

External answer — Stack Overflow Stack Exchange Author: SamMeow Original post: https://stackoverflow.com/a/76888511 License: CC BY-SA 4.0 — https://creativecommons.org/licenses/by-sa/4.0/ Adaptation: HTML converted to plain text; contact email addresses removed. I've experienced the same issue just now, and I realized I haven't allow the Algo Trading option in MT5 terminal You need to configure the MT5 terminal to allow automated trading. Here are the steps: Open the MT5 terminal and go to Tools > Options. In the Options window, go to the Expert Advisors tab. Check the box next to Allow automated trading. Check the box next to Allow DLL imports. Click OK. Finally you need to click the "Algo Trading" button on the menu bar, ensure it's in green color Hope it helps :)

External answer — Stack Overflow Stack Exchange Author: SUNNETDev Original post: https://stackoverflow.com/a/78064858 License: CC BY-SA 4.0 — https://creativecommons.org/licenses/by-sa/4.0/ Adaptation: HTML converted to plain text; contact email addresses removed. I had the same issue for two days now and I tried all the prescriptions but didn't solve but eventually this was how i resolved it. First thing is to make sure that your mt5 is configured to receive algo trading as previously said above. Goto Tools to Options to Exert Advisors, and tick boxes to allow algorithmic trading, allow DLL imports and allow WebRequest, and untick all other four boxes. Finally go to your order dictionary preparation and try the several "type_filling" options. "type_filling":mt5.ORDER_FILLING_FOK worked perfectly for me. You could try other types such as mt5._XXX_RETURN or mt5._XXX_IOC too to see which one works for you.

External answer — Stack Overflow Stack Exchange Author: Akani Original post: https://stackoverflow.com/a/79743479 License: CC BY-SA 4.0 — https://creativecommons.org/licenses/by-sa/4.0/ Adaptation: HTML converted to plain text; contact email addresses removed. there is no adequate response, to this yet, major answers here are using a static filling mode, IOC, FOK, naturally the symbol filling mode is supposed to be the filling mode accepted for that symbol, but that is not the case in every broker. using static filling mode works for just one MT5 instance, but if you consider a case where we have mutiple instances of MT5 where one filling mode, does not work for all brokers, then this becomes an issue.