> ## 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.

# Hierarchies

| **Hierarchy**                        | **Level**        | **Comments**                                                                           |
| ------------------------------------ | ---------------- | -------------------------------------------------------------------------------------- |
| **Dates** (slicing hierarchy)        | **AsOfDate**     | The as-of date (T-1). From the **AsOfDate** field in the input file.                   |
| **Book** (slicing hierarchy)         | **Desk**         | The Book field in the input file.                                                      |
| **Legal Entity** (slicing hierarchy) | **Legal Entity** | The Legal Entity field in the input file.                                              |
| **Lookback** (analysis hierarchy)    | **Lookback**     | The past date. Used for expanding the P\&L values for P\&L Attribution Test analytics. |