Mapping a service location to a parent location

concept australia Updated Sep 10, 2026 1 min read determining-parent-location.md

Map a service location to a parent location by setting parent determination rules.

Parent determination uses a business rule that is stored in the wm_location_parent_lookup_rule table to map a service location to its parent location. All service locations are mapped to their corresponding parent location. The system checks the combination of fields and assigns the parent location to a work order or work order task.

Rules are executed in the following order to determine a parent location when a new service location is added:

Zip / Postal Code: The corresponding parent location is assigned when a zip code and country values match.
Min Zip / Postal Code and Max Zip / Postal Code: When a zip code and country values fall under the defined minimum and maximum zip code range, then the corresponding parent location is assigned.
City and State: When city, state, and country values match, then the corresponding parent location is assigned.
State: When state and country values match, then the corresponding parent location is assigned.

Note: The Country name is the default selection for all the criteria.

For more information, see Create parent determination rules for service locations.

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---
title: Mapping a service location to a parent location
description: Map a service location to a parent location by setting parent determination rules.
locale: en-US
canonical_url: https://www.servicenow.com/docs/r/australia/field-service-management/workforce-optimization-for-field-service/determining-parent-location.html
release: australia
product: Workforce Optimization for Field Service
classification: workforce-optimization-for-field-service
topic_type: concept
last_updated: "2026-09-10"
reading_time_minutes: 1
breadcrumb: [Service Locations, Set up workforce, Configure, Field Service Management]
---

# Mapping a service location to a parent location

Map a service location to a parent location by setting parent determination rules.

Parent determination uses a business rule that is stored in the **wm\_location\_parent\_lookup\_rule** table to map a service location to its parent location. All service locations are mapped to their corresponding parent location. The system checks the combination of fields and assigns the parent location to a work order or work order task.

Rules are executed in the following order to determine a parent location when a new service location is added:

1. **Zip / Postal Code**: The corresponding parent location is assigned when a zip code and country values match.
2. **Min Zip / Postal Code** and **Max Zip / Postal Code**: When a zip code and country values fall under the defined minimum and maximum zip code range, then the corresponding parent location is assigned.
3. **City** and **State**: When city, state, and country values match, then the corresponding parent location is assigned.
4. **State**: When state and country values match, then the corresponding parent location is assigned.

**Note:** The **Country** name is the default selection for all the criteria.

For more information, see [Create parent determination rules for service locations](https://raw.githubusercontent.com/ServiceNow/ServiceNowDocs/australia/markdown/australia/field-service-management/workforce-optimization-for-field-service/configure-parent-determination.md).

**Related topics**

[Setting ad-hoc locations in work orders and work order tasks](https://raw.githubusercontent.com/ServiceNow/ServiceNowDocs/australia/markdown/australia/field-service-management/work-order-management/service-locations-work-orders.md)