---
title: "Categorization with Grouping Expressions"
description: "Grouping expressions are used to find infrastructure objects that share common properties. When you configure categorization with grouping expression, Veeam ONE Client creates a set of groups, and includes objects with matching attributes into..."
canonical: "https://helpcenter.veeam.com/docs/vro/categorization/grouping_expressions.html"
breadcrumb: "Group Management Guide > Categorization Model and Methods > Categorization with Grouping Expressions"
dateModified: "2026-09-02"
---

# Categorization with Grouping Expressions

Grouping expressions are used to find infrastructure objects that share common properties. When you configure categorization with grouping expression, Veeam ONE Client creates a set of groups, and includes objects with matching attributes into these groups.

Groups created using the grouping expression method have dynamic membership. If the property value changes, the objects can be moved into another group or excluded from categorization when the next data collection runs.

For example, you can categorize VMs based on their memory value using the following expression:

```
CASE
WHEN Memory >= "2048"
THEN "More than 2GB"
ELSE "Less than 2GB"
END
```

Veeam ONE Client will create two groups: **More than 2GB**, and **Less than 2GB**. If the amount of memory allocated to a VM changes, this VM will be moved into another group next time data collection runs.

To categorize infrastructure objects using a grouping expression:

1. Open Veeam ONE Client.
2. In the inventory pane, navigate to the **Business View** node.
3. Launch the **Add Category** wizard:

   1. In the information pane, switch to the **Categories** tab.
   2. In the **Actions** pane, click **Add Category**.

   Alternatively, in the **Business View** tree, right-click the main node and select **Add Category**.

   [![Launching Categorization Wizard](images/launch_cat_wizard.png "Launching Categorization Wizard")](images/launch_cat_wizard.png){.toggle scale=57}

4. At the **Name and Object Type** step of the wizard, enter a category name and select an object type from the drop-down list.

   ![](images/name_object.png)

5. At the **Platform** step of the wizard, select the platform for which you want to categorize objects.

   ![](images/categorization_platform.png)

6. At the **Categorization Method** step of the wizard, select the **Grouping expression** option.

   ![](images/grouping_expression_method.png)

7. At the **Grouping Criteria** step of the wizard, specify an expression that Veeam ONE must use to create groups and distribute infrastructure objects in these groups.

   1. Click **Editor** to open the **Grouping Expression Editor**.

      ![](images/grouping_expression.png)

   2. In the menu of the **Grouping Expression Editor**, double-click an item to add it to the **Expression** field.

      ![](images/expression_editor.png)

   3. Click **Save** to save the expression and exit the editor. 

      The expression will appear in the **Expression** field at the **Grouping Criteria** step of the **Add Category** wizard.

      ![](images/create_grouping_expression.png)

      For details on the syntax of grouping expressions and examples, see the Veeam ONE Monitoring Guide, section [Appendix B. Grouping Expressions Syntax and Examples](https://helpcenter.veeam.com/docs/one/monitor/appendix_expressions_examples.html?ver=120).

8. Click **Verify** to validate the expression. Click **OK** to acknowledge the verification.

   ![](images/validate_expression.png)

9. Click **Save**.

Veeam ONE Client will run the expression and create groups based on the specified properties.