---
sourceDocument: Zurich IT Asset Management
sourceDocumentLink: https://www.servicenow.com/docs/r/zurich/it-asset-management

 Release :

    - zurich

ft:locale :

    - en-US

ft:publication_title :

    - Zurich IT Asset Management

ft:clusterId :

    - itam

bundleId :

    - itam

workflow :

    - Technology


---

# Model categories

# Model categories {#ariaid-title1}

* Release version: Zurich
* 
* Updated July 31, 2025
* 
* ![](https://www.servicenow.com/docs/portal-asset/ico-clock) 1 minute to read

Model categories define relationships between asset classes, product model classes, and Configuration Management Database (CMDB) configuration item (CI) classes in the Enterprise Asset Management application.

Each model category is divided into sub-categories that correspond to a model class, an asset class, and an existing CMDB CI class. Multiple model categories can be assigned to a single model class and a single asset class. A CI class can be assigned to only a single model category. However, it is not
mandatory to assign a CI class to a model category.  
Various base model categories are available for you to choose from. The top tier model categories are as follows:

* Medical
* Facility
* Transportation
* Industrial
* Retail
* Construction
* Tactical equipment
* Wearable
* Multimedia production equipment
{#model-hierarchy__ul_ltq_gsw_fsb}

For the complete list of available model categories and their corresponding CMDB CI, asset, and model classes, see [Enterprise model categories and corresponding classes](https://www.servicenow.com/docs/2qs7N~Z2J58hQaS~0QDYnQ "Enterprise model categories and their corresponding Configuration Management Database (CMDB) configuration item (CI), asset, and model classes.").  
Note:  
If you do not wish to use any of the existing sub-categories within a top tier model category, you can create your own sub-categories. See [Create model categories](https://www.servicenow.com/docs/CQgLYzfT9oYtXL4nWbl8CA "You can create model categories for the Enterprise Asset Management application.") for detailed instructions.  
Warning:  
ServiceNow strongly recommends that you use only the existing top tier model categories.