This order will be activated when the Bid price touches the sell stop order. The activated order will be executed at the best available price or rejected if no price is available; the order is filled for the full amount but can be filled better or worse than the requested price. Same policy applies for Trailing Stop orders.
((Account Balance + Unrealized P&L)/Margin requirement on net open position) x 100 = Margin Level
Example: Trader X has a 10,000 USD balance with an unrealized P&L of +1,000 USD. The open positions include long 300,000 USDCHF and short 200,000 USDCHF. Net open position is 100,000 USDCHF
((10,000 USD + 1,000 USD)/1000 USD) x 100 = 1100% Margin Level