Indexes

Message Layouts
Session
PreTrade
Trade
PostTrade
Infrastructure

Field

UnderlyingSecurityAltIDSource

ID (tag)459
TypeSecurityIDSourceCodeSet
PedigreeAdded FIX.4.3, Updated EP271
Identifies class or source of the UnderlyingSecurityAltID(458) value.
Required if UnderlyingSecurityAltID is specified.

Used in groups:

Orchimate Copyright 2026 Atomic Wire Technology Limited
Orchestra Copyright 2026 FIX Protocol Ltd
Terms of Use|Privacy Policy