You cannot have both long and short positions on margin open at the same time in a single currency pair . All long spot positions on margin must be closed before a short spot position on margin can be opened (and vice versa). See Flipping Positions.
You cannot have both long and short positions on margin open at the same time in a single currency pair . All long spot positions on margin must be closed before a short spot position on margin can be opened (and vice versa). See Flipping Positions.