Why can Stop Loss and Take Profit levels be set when opening positions for some symbols?
Please check the execution mode specified for these symbols: When “Execution by Market” is set, a decision about the execution price is made on the server side without any additional approval from the trader. Sending a market order in such a mode implies the anticipatory confirmation of the order execution price. In such a case a trader cannot know what the price of the order execution will be. That is why Stop Loss and Take Profit levels can only be set after the execution, by modifying the resulting open position.