<xs:simpleType name="OrderID_t">
<xs:annotation>
<xs:documentation xml:lang="en">Unique identifier for Order as assigned by sell side broker exchange ECN Uniqueness must be guaranteed within a single trading day Firms which accept multi day orders should consider embedding a date within the OrderID field to assure uniqueness across days
</xs:documentation>
<xs:appinfo xmlns:x="http://www.fixprotocol.org/fixml/metadata.xsd">
<xs:Xref Protocol="FIX" name="OrderID" tag="37" datatype="String" ComponentType="Field" StdAbbrev="OrdID" QualifiedAbbrev="OrdID" Category="" CategoryAbbrev="" />
<xs:Xref Protocol="ISO_15022_XML" />
</xs:appinfo>
</xs:annotation>
<xs:restriction base="xs:string" />
</xs:simpleType>
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