A Reference Price is used when calculating the allowable order prices that can be submitted within the active Price Bands for a contract. The Reference Price may be the current Mark Price, the Close Price or a Theoretical Price that is used to create the current upper and lower limits of a Price Band. Any order submitted with a price above or below the current Price Bands would not be accepted. Price Bands can be calculated dynamically or by using a set amount from the Reference Price. As an example, if the current Reference Price is using a Mark Price of 10.00 and the current allowable price for a sell order cannot be placed more than 18 % below 10.00, then any sell order submitted at or below 8.20 would not be accepted. If your order is not accepted due to a price that is considered too far from a Reference Price, you may try to recreate and resubmit a new order at a price within the current allowable price limits.
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