| Tag | Field Name | Abbr Name | Data Type | Union Datatype | Description | Pedigree |
|---|---|---|---|---|---|---|
| 458 | UnderlyingSecurityAltID | AltID | String | Alternate Security identifier value for this underlying security of UnderlyingSecurityAltIDSource (459) type (e.g. CUSIP, SEDOL, ISIN, etc). Requires UnderlyingSecurityAltIDSource. Data domain controlled by field UnderlyingSecurityAltIDSource(459) | Added FIX.4.3 |
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