What is the "Insufficient margin/Failed Margin" error code and how to solve it?

Either the size of the copied order is too large or you have already several open positions using margin and probably few P&L consequently decreasing the free margin your account had during a period of time, which leads to insufficient free margin to execute the copy on the slave. This is your broker that return us this "Insufficient margin/Failed Margin" error when trying to open the position.

Please close some open positions or add funds to your account, and try again to place an order.