---
title: <NestedParties3> component block – FIX 5.0 SP2 – FIX Dictionary – Onix Solutions
description: <NestedParties3> component block – FIX 5.0 SP2 – FIX Dictionary – Onix Solutions
---

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# <NestedParties3> component block – FIX 5.0 SP2 – FIX Dictionary

| Messages by MsgType \| Messages by Name \| Fields by Tag \| Fields by Name \| FIX 5.0 SP2 \| Home FIX 5.0 SP2 : <NestedParties3> component block Structure \| Used In Description The NestedParties3 component block is identical to the <Parties> Block. It is used in other component blocks and repeating groups when nesting will take place resulting in multiple occurrences of the <Parties> block within a single FIX message. Use of NestedParties3 under these conditions avoids multiple references to the <Parties> block within the same message which is not allowed in FIX tag/value syntax. Structure Tag Field Name Req'd Comments 948 NoNested3PartyIDs N Repeating group below should contain unique combinations of Nested3PartyID, Nested3PartyIDSource, and Nested3PartyRole => 949 Nested3PartyID N Used to identify source of Nested3PartyID. Required if Nested3PartyIDSource is specified. Required if NoNested3PartyIDs > 0. => 950 Nested3PartyIDSource N Used to identify class source of Nested3PartyID value (e.g. BIC). Required if Nested3PartyID is specified. Required if NoNested3PartyIDs > 0. => 951 Nested3PartyRole N Identifies the type of Nested3PartyID (e.g. Executing Broker). Required if NoNested3PartyIDs > 0. => Component Block - <NstdPtys3SubGrp> N Repeating group of Nested3Party sub-identifiers. Used In <InstrmtLegExecGrp> <PreAllocMlegGrp> |
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