| Tag | Field Name | XML Name | Data Type | Union Datatype | Description | Added | Depr. | Enums from tag |
|---|---|---|---|---|---|---|---|---|
| 256 | UnderlyingCreditRating | @CrdRtg | String |
Underlying security’s CreditRating. See CreditRating (255) field for description (Note tag # was reserved in FIX 4.1, added in FIX 4.3) | Added FIX.4.2 |
|