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

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# <UndSecAltIDGrp> component block – FIX 5.0 – FIX Dictionary

| Messages by MsgType \| Messages by Name \| Fields by Tag \| Fields by Name \| FIX 5.0 \| Home FIX 5.0 : <UndSecAltIDGrp> component block Structure \| Used In DescriptionNo specific description is available. Structure Tag Field Name Req'd Comments 457 NoUnderlyingSecurityAltID N Number of UnderlyingSecurityAltID (458) entries. => 458 UnderlyingSecurityAltID N => 459 UnderlyingSecurityAltIDSource N Used In <UnderlyingInstrument> |
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