In short, it will close all or some of your trades if your equity to used margin ratio drops below the stop-out level.

Stop out level refers to the point at which all active positions in the forex market are closed automatically by a broker due to a reduction in the trader’s margin to levels that can no longer sustain the open position.

Stop Out is a signal given by the server to force close a position when a client doesn’t have enough free equity to support the open trade.