Configure a Primary change model

task australia Updated Sep 10, 2026 1 min read create-a-primary-change-model.md

Configure a Primary change model so that a change using this model generates one Child change for each affected configuration item (CI).

Before you begin

The Major Change plugin (com.sn_major_change) must be active. For more information, see Activate a plugin.
A base change model to configure as the Primary change model must exist. For more information, see Create a Change model.

Role required: sn_change_write or itil

Procedure

Navigate to All > Change > Administration > Change Models and open the change model to configure as the Primary change model.
Open the state record in which Child changes are created, for example, the Assess state.

On the Attributes tab, add the Allow Child Change Creation attribute with Active selected. Without this attribute, Child changes are not created when the Primary change enters that state.
Select Submit.

Result

The Primary change model is available for selection on new change requests. When a change using this model enters the configured state, the flow you configure in Create a scaled change flow generates one Child change for each CI in the Affected CIs related list.

What to do next

Create a Child change model for the Child changes that this Primary change model generates. For more information, see Configure a Child change model.

Parent Topic:Scaled change

Keywords Primary change modelScaled change modelscaled change

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---
title: Configure a Primary change model
description: Configure a Primary change model so that a change using this model generates one Child change for each affected configuration item \(CI\).
locale: en-US
canonical_url: https://www.servicenow.com/docs/r/australia/it-service-management/change-management/create-a-primary-change-model.html
release: australia
product: Change Management
classification: change-management
topic_type: task
last_updated: "2026-09-10"
reading_time_minutes: 1
keywords: [Primary change model, Scaled change model, scaled change]
breadcrumb: [Scaled change, Configure, Change Management, IT Service Management]
---

# Configure a Primary change model

Configure a Primary change model so that a change using this model generates one Child change for each affected configuration item \(CI\).

## Before you begin

- The Major Change plugin \(com.sn\_major\_change\) must be active. For more information, see [Activate a plugin](https://raw.githubusercontent.com/ServiceNow/ServiceNowDocs/australia/markdown/platform-administration/t_ActivateAPlugin.md).
- A base change model to configure as the Primary change model must exist. For more information, see [Create a Change model](https://raw.githubusercontent.com/ServiceNow/ServiceNowDocs/australia/markdown/australia/it-service-management/change-management/create-a-change-model.md).

Role required: sn\_change\_write or itil

## Procedure

1. Navigate to **All** &gt; **Change** &gt; **Administration** &gt; **Change Models** and open the change model to configure as the Primary change model.

2. Open the state record in which Child changes are created, for example, the **Assess** state.

On the **Attributes** tab, add the **Allow Child Change Creation** attribute with **Active** selected. Without this attribute, Child changes are not created when the Primary change enters that state.

3. Select **Submit**.

## Result

The Primary change model is available for selection on new change requests. When a change using this model enters the configured state, the flow you configure in [Create a scaled change flow](https://raw.githubusercontent.com/ServiceNow/ServiceNowDocs/australia/markdown/australia/it-service-management/change-management/create-a-scaled-change-flow.md) generates one Child change for each CI in the **Affected CIs** related list.

## What to do next

Create a Child change model for the Child changes that this Primary change model generates. For more information, see [Configure a Child change model](https://raw.githubusercontent.com/ServiceNow/ServiceNowDocs/australia/markdown/australia/it-service-management/change-management/create-a-child-change-model.md).

**Parent Topic:**[Scaled change](https://raw.githubusercontent.com/ServiceNow/ServiceNowDocs/australia/markdown/australia/it-service-management/change-management/scaled-change-overview.md)