Define a characteristic for the test definition

---
title: Define a characteristic for the test definition
description: Add a characteristic for a test to determine the properties that are required to run and evaluate the test.
locale: en-US
canonical_url: https://www.servicenow.com/docs/r/telecom-media-technology/add-characterisitc-for-test-specification.html
release: brazil
topic_type: task
last_updated: "2026-09-10"
reading_time_minutes: 1
breadcrumb: [Setting up test definitions, Setting up test configuration records, Configure, Service Test Management, Telecommunications, Media, and Technology \(TMT\)]
---

# Define a characteristic for the test definition

Add a characteristic for a test to determine the properties that are required to run and evaluate the test.

## Before you begin

Role required: admin

## Procedure

1.  Navigate to **All** > **Service Test Management** > **Test Definitions** > **All**.

2.  Select the test definition that you want to open.

3.  In the Test Definition Characteristics related list, add a characteristic by selecting **New**.

4.  On the form, fill in the fields.

<table id="table_et2_13w_3bc"><thead><tr><th>

Field

</th><th>

Description

</th></tr></thead><tbody><tr><td>

Characteristic

</td><td>

Service or product characteristic of the test that helps determine the effectiveness of the defined characteristic.

 In the test definitions, the characteristics of type attachment and duration aren’t supported.

 For example, if you select download speed characteristics for the speed test definition, the system tests the downloading speed to troubleshoot the issue raised due to internet outage.

</td></tr><tr><td>

Characteristic option

</td><td>

Characteristic options for a characteristic.

</td></tr><tr><td>

Test definition

</td><td>

Auto-populated name of the test definition for which you’re defining the characteristics.

</td></tr></tbody>
</table>    **Note:** A characteristic belongs to either a test definition or a test group, not both. To define a characteristic for a test group, see [Define a characteristic for a test group](https://raw.githubusercontent.com/ServiceNow/ServiceNowDocs/brazil/markdown/telecom-media-technology/define-characteristic-for-test-group.md).

5.  Select **Submit**.


**Related topics**  


[Test definitions in Service Test Management](https://raw.githubusercontent.com/ServiceNow/ServiceNowDocs/brazil/markdown/telecom-media-technology/test-definition-stm.md)

[Test groups in Service Test Management](https://raw.githubusercontent.com/ServiceNow/ServiceNowDocs/brazil/markdown/telecom-media-technology/test-group-stm.md)