List of predefined alert grouping tags

reference australia Updated Sep 10, 2026 1 min read alert-clustering-predefined-tag-list.md

A list of the predefined alert clustering tags provided with the Tag Based Alert Clustering Engine  application.

Name	Source	Match method
CI	em_alert.cmdb_ci	Exact match
Description	em_alert.description	Exact match
Metric Name	em_alert.metric_name	Exact match
Node	em_alert.node	Exact match
Resource	em_alert.resource	Exact match
Source	em_alert.source	Exact match
Source instance	em_alert.event_class	Exact match
Type	em_alert.type	Exact match
Assignment group	em_alert.assignment_group	Exact match
CI Class	cmdb_ci.sys_class_name	Exact match
Dns domain	cmdb_ci.dns_domain	Exact match
ip address	cmdb_ci.ip_address	Exact match
Location	cmdb_ci.location	Exact match
Environment	cmdb_ci.environment	Exact match
CI name	cmdb_ci.name	Exact match
Namespace	cmdb_ci.namespace	Exact match

Name	Description	Default mapping from CMDB
t_ip_address	IP address	cmdb_ci.ip_address
t_application	Application	-
t_region	Region	-
t_location	Location	cmdb_ci.location
t_environment	Environment	cmdb_ci.environment
t_namespace	Namespace	cmdb_ci.namespace

Parent Topic:Event Management reference

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---
title: List of predefined alert grouping tags
description: A list of the predefined alert clustering tags provided with the Tag Based Alert Clustering Engine  application.
locale: en-US
canonical_url: https://www.servicenow.com/docs/r/australia/it-operations-management/event-management/alert-clustering-predefined-tag-list.html
release: australia
product: Event Management
classification: event-management
topic_type: reference
last_updated: "2026-09-10"
reading_time_minutes: 1
breadcrumb: [Reference, Event Management, ITOM AIOps, IT Operations Management]
---

# List of predefined alert grouping tags

A list of the predefined alert clustering tags provided with the Tag Based Alert Clustering Engine  application.

|Name|Source|Match method|
|----|------|------------|
|CI|em\_alert.cmdb\_ci|Exact match|
|Description|em\_alert.description|Exact match|
|Metric Name|em\_alert.metric\_name|Exact match|
|Node|em\_alert.node|Exact match|
|Resource|em\_alert.resource|Exact match|
|Source|em\_alert.source|Exact match|
|Source instance|em\_alert.event\_class|Exact match|
|Type|em\_alert.type|Exact match|
|Assignment group|em\_alert.assignment\_group|Exact match|
|CI Class|cmdb\_ci.sys\_class\_name|Exact match|
|Dns domain|cmdb\_ci.dns\_domain|Exact match|
|ip address|cmdb\_ci.ip\_address|Exact match|
|Location|cmdb\_ci.location|Exact match|
|Environment|cmdb\_ci.environment|Exact match|
|CI name|cmdb\_ci.name|Exact match|
|Namespace|cmdb\_ci.namespace|Exact match|

|Name|Description|Default mapping from CMDB|
|----|-----------|-------------------------|
|t\_ip\_address|IP address|cmdb\_ci.ip\_address|
|t\_application|Application|-|
|t\_region|Region|-|
|t\_location|Location|cmdb\_ci.location|
|t\_environment|Environment|cmdb\_ci.environment|
|t\_namespace|Namespace|cmdb\_ci.namespace|

**Parent Topic:**[Event Management reference](https://raw.githubusercontent.com/ServiceNow/ServiceNowDocs/australia/markdown/australia/it-operations-management/event-management/event-management-reference.md)