---
title: Tree picker
description: The tree picker is a special reference lookup that you can add as an attribute to a form. Add the tree picker to the classic environment or to workspaces.
locale: en-US
canonical_url: https://www.servicenow.com/docs/r/australia/platform-user-interface/c\_TreePicker.html
release: australia
topic_type: concept
last_updated: "2026-03-12"
reading_time_minutes: 1
breadcrumb: [Common UI elements, Working in Core UI, Configure UIs and portals, Configure user experiences]
---

# Tree picker

The tree picker is a special reference lookup that you can add as an attribute to a form. Add the tree picker to the classic environment or to workspaces.

The tree picker is a special reference lookup for the following items.

-   Configuration Items \(CIs\) for a field that depends on another CI field.
-   Reference elements for any hierarchical table. A hierarchical table is any table that has a parent field pointing back at itself.
-   Values for a user reference that depends on the group.

-   **[Add the tree picker attribute](https://raw.githubusercontent.com/ServiceNow/ServiceNowDocs/australia/markdown/australia/platform-user-interface/t_AddTheTreePickerAttribute.md)**  
A limit of 1000 has been placed on the number of nodes returned to the tree picker. This limit is configurable with the **glide.ui.group\_heirarchy.max\_nodes** property.

**Parent Topic:**[Common UI elements](https://raw.githubusercontent.com/ServiceNow/ServiceNowDocs/australia/markdown/australia/platform-user-interface/p_CommonUIElements.md)

**Related topics**  


[bundle-platadm.c_ReferenceLookup]