> ## 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.

# BookHierarchy

> The BookHierarchy in the Organization dimension of FRTBCombinedCube, providing a 15-level hierarchy for aggregating positions across the full book structure

|                 |                                                                                                                                                     |
| --------------- | --------------------------------------------------------------------------------------------------------------------------------------------------- |
| **Description** | Multi-level book structure.                                                                                                                         |
| **Dimension**   | Organization                                                                                                                                        |
| **Hierarchy**   | BookHierarchy                                                                                                                                       |
| **Levels**      | \[ALL, Level 1, Level 2, Level 3, Level 4, Level 5, Level 6, Level 7, Level 8, Level 9, Level 10, Level 11, Level 12, Level 13, Level 14, Level 15] |