IOIID (Tag = 23, Type: String)

Unique identifier of IOI message.

(Prior to FIX 4.1 this field was of type int)

Used in:

• <ListOrdGrp>
• IOI (6)
• NewOrderSingle (D)
• NewOrderCross (s)
• CrossOrderCancelReplaceRequest (t)
• NewOrderMultileg (AB)
• MultilegOrderCancelReplace (AC)
• QuoteResponse (AJ)