---
title: Namespace
slug: unify/namespace
docTags:
createdAt: 2026-07-17T15:25:49.589Z
---
The **Namespace** tab displays a dynamically generated tree of topics that reflects the data organization rules that you defined. Each node in the tree carries a status: `New`, `Accepted`, `Neglected`, or `Rejected`. You review the tree, accept the nodes that belong in your unified namespace, and reject the ones that do not.
## How node statuses propagate
Status changes move through the hierarchy in opposite directions:
- Accepting a node also accepts all parent nodes in the hierarchy.
- Rejecting a node also rejects all child nodes
Review the affected branch before you accept or reject a node because a single action can change the status of many nodes.
## Before you begin
Before you begin, make sure you have the following:
- A running instance of Unify and access to its web interface
- UNS Structure defined so that the tree can generate with proper class labels
- At least one MQTT account, if you plan to add or modify MQTT permissions
## Access the Namespace tab
Select **Explore UNS** from the left navigation, then select the **Namespace** tab.
In this tab, you can filter and navigate the tree, accept or reject nodes, and view details for the selected node.
| **Section** | **Description** |
| ------------------ | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| **UNS Structure** | Filters the tree to topics that contain the search text. Click **Edit** to modify the structure. |
| **Filter** | Filters the tree by `All`, `New`, `Accepted`, `Neglected`, or `Rejected` nodes. |
| **Hierarchy Tree** | Displays topics in a tree that reflects your UNS categorization rules. Expand and collapse nodes to navigate subtopics, and click a node to select it. |
| **Action** | Select a topic in the tree and open the **Action** menu:
- **Accept:** Accepts the node and the parent nodes below it
- **Reject**: Rejects the node and the child nodes below it
- **Accept subtree**: Accepts the node and the nodes below it
- **View topic data:** Opens the MQTT Client subscribed to the selected topic
- **Delete**: Removes the selected topic and its children |
| **Refresh** | Refreshes the hierarchy |