---
title: Modify a manual cluster
description: Modify an existing manual cluster to update its service, CI, CI class, or description.
locale: en-US
canonical_url: https://www.servicenow.com/docs/r/australia/it-operations-management/event-management/modify-a-manual-cluster.html
release: australia
product: Event Management
classification: event-management
topic_type: task
last_updated: "2026-03-12"
reading_time_minutes: 2
breadcrumb: [Configure CIs as manual cluster, Application services in Event Management, Configure, Event Management, ITOM AIOps, IT Operations Management]
---

# Modify a manual cluster

Modify an existing manual cluster to update its service, CI, CI class, or description.

## Before you begin

Role required: evt\_mgmt\_admin

## Procedure

1.  Navigate to **All** > **Event Management** > **Administration** > **Manual Clusters**.

2.  From the list, select a manual cluster.

3.  Change the service containing the manual cluster by selecting a different one in the **Select a Service containing this manual cluster** section.

    The cluster number appears in the **Number** field.

    1.  Select the Lookup using list icon \(\[Omitted image "search-icon.png"\] Alt text: Lookup using list icon\) in the **Service** field.

    2.  In the CMDB CI Service \[cmdb\_ci\_service\_discovered\] table, select a manually created service.

    3.  Preview the record by selecting the Preview this record icon \(\[Omitted image "info.png"\] Alt text: Preview this record icon\).

4.  In the **Select a Specific CI or generic CI class** section in the **Defined As** field, modify the manual cluster.

    Define the cluster as a specific CI or as a generic CI class that applies to all CIs of that class.

    -   Specific CI - In the **Configuration item** field, select the Lookup using list icon \(\[Omitted image "search-icon.png"\] Alt text: Lookup using list icon\) and select the configuration item.
    -   Generic CI class – In the **Configuration item class** field, select the configuration item class.
5.  In the **Provide a Description** section, modify the description in the **Description** field.

    The **Description** field is automatically updated when you select **Save** or **Submit**. The automatically generated description consists of the configuration item name and the service name. For example: `CI <Alert Processing> in service <linuxApplService> (*** auto generated ***)`.

    To prevent an automatic update of the Description field and retain your changes, delete the \(\*\*\* auto generated \*\*\*\) suffix that appears as part of the description.

6.  Activate or deactivate the cluster by selecting or clearing the **Activate** check box.

7.  Select **Update** to save your changes.


## Result

The manual cluster is saved in the EM Impact Manual Cluster \[em\_impact\_manual\_cluster\] table. The impact calculation is recalculated automatically.

**Parent Topic:**[Configuring CIs in a manual service as a manual cluster](https://raw.githubusercontent.com/ServiceNow/ServiceNowDocs/australia/markdown/australia/it-operations-management/event-management/manual-cluster-in-a-manual-service.md)

**Related topics**  


[Configuring CIs in a manual service as a manual cluster](https://raw.githubusercontent.com/ServiceNow/ServiceNowDocs/australia/markdown/australia/it-operations-management/event-management/manual-cluster-in-a-manual-service.md)