Define a relationship type

---
title: Define a relationship type
description: Create type codes that define the relationship between parent and child tasks.
locale: en-US
canonical_url: https://www.servicenow.com/docs/r/australia/platform-administration/table-administration-and-data-management/t\_DefineARelationshipType.html
release: australia
product: Table Administration and Data Management
classification: table-administration-and-data-management
topic_type: task
last_updated: "2026-09-10"
reading_time_minutes: 1
breadcrumb: [Many-to-many task relations, Working with Task table, Table admin, Tables and data, Configure core features, Administer the ServiceNow AI Platform]
---

# Define a relationship type

Create type codes that define the relationship between parent and child tasks.

## Before you begin

Activate the Many to Many Task Relations plugin \(com.snc.task\_relations\) first. See [Request many to many task relations](https://raw.githubusercontent.com/ServiceNow/ServiceNowDocs/australia/markdown/australia/platform-administration/table-administration-and-data-management/t_RequestManyToManyTaskRelations.md).

Role required: admin

## Procedure

1.  Navigate to **All** > **Task Relationships** > **Relation Types** and select **New**.

2.  Populate the Parent Descriptor and Child Descriptor fields with a short description of the relationship between the two tasks, such as a parent descriptor of Caused By and a child descriptor of Causes.

3.  Select and hold \(or right-click\) the form header bar and select **Save**.

    The Name field automatically populates with the Parent and Child descriptors.


**Parent Topic:**[Creating many-to-many task relations](https://raw.githubusercontent.com/ServiceNow/ServiceNowDocs/australia/markdown/australia/platform-administration/table-administration-and-data-management/c_ManyToManyTaskRelations.md)