When creating an order to close a Complex Position, you may see the message stating "Account XXX has a difference between the stored and implied position in (the complex position). The order size will be calculated using the implied position."
You received this message because you are submitting an order to close, roll or modify a Complex Position using the “% Change” feature and the quantity of open option positions in your account available to close for this order is different from what might be expected based on your original position. You may have previously rolled one leg of the original combo created as a Complex Position or increased your position by legging into more options.
To continue submitting your new order you will need click in the message box to confirm that the order quantity we have calculated is the quantity you wish to trade.