We assume that the interaction with the broker is subject to specific features. In some cases the dialogue with the broker, expects to take an interval of time between the request for placing an order to the broker (who will enter in the market) and its actual loading. For technical reasons, some brokers shall notify a temporary order ID number which allows you to keep a reference than the definitive ID value assigned by the market. This field is used to keep the cross reference between these two values by allowing proper accounting
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