---
sourceDocument: Australia IT Operations Management
sourceDocumentLink: https://www.servicenow.com/docs/r/australia/it-operations-management

 Release :

    - australia

ft:locale :

    - en-US

ft:publication_title :

    - Australia IT Operations Management

ft:clusterId :

    - itom

bundleId :

    - itom

workflow :

    - Technology


---

# Modify a manual cluster

# Modify a manual cluster {#ariaid-title1}

Release version: Australia  
Updated March 12, 2026  
![](https://www.servicenow.com/docs/portal-asset/ico-clock) 1 minute to read  
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 AllEvent ManagementAdministrationManual 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 (![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. **Optional:** Preview the record by selecting the Preview this record icon (![Preview this record icon]()).
   {#modify-a-manual-cluster__substeps_mhz_xyr_2wb}
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 (![Lookup using list icon]()) and select the configuration item.
   * Generic CI class -- In the Configuration item class field, select the configuration item class.
   {#modify-a-manual-cluster__choices_pzv_dp4_dwb}
5. **Optional:** 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.
{#modify-a-manual-cluster__steps_yhk_gdk_xvb}

## Result

The manual cluster is saved in the EM Impact Manual Cluster \[em_impact_manual_cluster\] table. The impact calculation is recalculated automatically.
**Related concepts**   

* [Configuring CIs in a manual service as a manual cluster](https://www.servicenow.com/docs/H4Xr3WcsCvnH1LhwGQP4LQ "Configure or modify a CI as a specific CI or a generic CI class in a manual service (that was not discovered automatically) as a manually defined cluster. A manual cluster delivers redundancy capabilities and provides continued operations if one or more CIs fail.")

*[\>]: and then