---
title: Define test definition relationships with specifications
description: Establish a relationship between test definitions and their respective specifications or product model to determine the tests that must be executed for a given inventory. This relationship ensures that the appropriate tests are identified and executed based on the defined specifications. Without this association, the system can’t accurately assign the necessary tests for each inventory item.
locale: en-US
canonical_url: https://www.servicenow.com/docs/r/telecom-media-technology/specification-to-test-definition.html
release: australia
topic_type: task
last_updated: "2026-03-12"
reading_time_minutes: 1
breadcrumb: [Setting up test definitions, Service Test Management, Telecommunications, Media, and Technology \(TMT\)]
---

# Define test definition relationships with specifications

Establish a relationship between test definitions and their respective specifications or product model to determine the tests that must be executed for a given inventory. This relationship ensures that the appropriate tests are identified and executed based on the defined specifications. Without this association, the system can’t accurately assign the necessary tests for each inventory item.

## 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 Specification or product model to Test Definition Relationship related list, define a relationship by selecting **New**.

4.  On the form, fill in the fields.

    |Field|Description|
    |-----|-----------|
    |Specification|Name of the specification.|
    |Product model|Name of the inventory.|
    |Test Definition|Auto-populated name of the test definition for which you’re specifying a relationship.|

5.  Select **Submit**.