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sourceDocument: Yokohama IT Operations Management
sourceDocumentLink: https://servicenow-prod.fluidtopics.net/r/yokohama/it-operations-management

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ft:locale :

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ft:publication_title :

    - Yokohama IT Operations Management

ft:clusterId :

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---

# Activate and configure Service Mapping for top-down discovery

# Activate and configure Service Mapping for top-down discovery {#ariaid-title1}

* Release version: Yokohama
* 
* Updated January 30, 2025
* 
* ![](https://www.servicenow.com/docs/portal-asset/ico-clock) 1 minute to read

A top-down discovery provides a list of CIs and their interrelationships. This
information is useful for managing software services and hardware issues that are
associated with alerts.

## Before you begin

Role required: evt_mgmt_admin

## About this task

In Event Management, Service Mapping relationships appear on alerts. You can view the related CI and other information in the Event Management dashboard. The mapping relationships appear in a service map with the generated alert, any CIs that are bound to the alert, and all related CIs.

## Procedure

Use Service Mapping to get top-down discovery information.  
Service Mapping, which is closely related to Event Management, provides tools to discover the relationships between network, hardware, software, storage, and other devices.
**Related concepts**   

* [Service Mapping](https://servicenow-prod.fluidtopics.net/SSq52NRkIyGTocyFrHF1cw "The ServiceNow Service Mapping application discovers all application services in your organization and builds a comprehensive map of all devices, applications, and configuration profiles used in these application services.")  
**Related tasks**   

* [Request Service Mapping](https://servicenow-prod.fluidtopics.net/4wdymt6ZnC2Ns0MgK6ME2A "Service Mapping is available under the ITOM Visibility subscription and requires activation by ServiceNow personnel.")