> ## 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.

# Categories

Download sample file: [Categories.csv](../assets/csv/Categories.csv)

This file provides a description of desks.

This Categories file type is identified using the pattern: **`**/Categories*.csv{,.gz}`** (as specified by categories.file-pattern). A sample file is `Categories`. This file is loaded using the **CategoriesSource** topic. See the [Topic Aliases table](../dev/dev-ref-impl/dev-dlc/dlc-frtb-config#topic-aliases) for an understanding of the topic aliases associated with each topic.

|           |         |          |                   |                                                   |             |
| --------- | ------- | -------- | ----------------- | ------------------------------------------------- | ----------- |
| **Field** | **Key** | **Null** | **FieldType**     | **Description**                                   | **Example** |
| AsOfDate  | Y       | N        | Date ‘YYYY-MM-DD’ | Timestamp (at close of business) for the data.    |             |
| Node      | Y       | N        | String            | Name of the Node in the parent/child hierarchy.   |             |
| Category  | N       | N        | String            | Category for the node (and all Descendant nodes). |             |

This file is only used if the property `categories-hierarchy.enabled=true` is set.