| Tag | Field Name | Abbr Name | Data Type | Union Datatype | Description | Pedigree |
|---|---|---|---|---|---|---|
| 40542 | UnderlyingStreamDesc | Desc | String | A short descriptive name given to payment stream. Eg. CDS, Fixed, Float, Float2, GBP. The description has no intrinsic meaning but should be arbitrarily chosen by the remitter as a reference. | Added EP161 |
|