DescriptionUnique identifier of execution message as assigned by sell-side (broker, exchange, ECN) (will be 0 (zero) for ExecType <150>='I' (Order Status)). Uniqueness must be guaranteed within a single trading day or the life of a multi-day order. Firms which accept multi-day orders should consider embedding a date within the ExecID <17> field to assure uniqueness across days. (Prior to FIX 4.1 this field was of type int) Used In |
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