> ## Documentation Index
> Fetch the complete documentation index at: https://docs.activeviam.com/llms.txt
> Use this file to discover all available pages before exploring further.

# UnderlyingDescription

The **UnderlyingDescription** store contains the description of the [curve](../data-model-core/curve).

The following table lists the fields in the store that are used for the CSR non-Sec risk-class.
See the [UnderlyingDescription](../../../../../../datastore/standardisedapproach/underlying-desc) store documentation for details on the store.

| Data Model Field    | Store Field | Notes           |
| ------------------- | ----------- | --------------- |
| As-Of Date          | AsOfDate    |                 |
| Curve Name          | Underlying  |                 |
| Risk Class          | RiskClass   | “CSR non-Sec”   |
| Bucket              | Bucket      |                 |
| Credit Quality      | CSRQuality  |                 |
| Sector              | CSRSector   |                 |
| Covered Bond Rating | CSRRating   | “high” or “low” |