ExecID (Tag = 17, Type: String)

Unique identifier of Execution Report (8) 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:

• Execution Report (8)
• Trade Capture Report Request (AD)
• Trade Capture Report (AE)
• Trade Capture Report Ack (AR)
• Allocation Report (AS)
• Collateral Request (AX)
• Collateral Assignment (AY)
• Collateral Response (AZ)
• Collateral Report (BA)
• Collateral Inquiry (BB)
• Collateral Inquiry Ack (BG)
• Allocation Instruction (J)
• Don't Know Trade (Q)