---
schema_version: "1"
id: 986239b0bfde99739a91a3c5229ce08fbc8f56c289023047f8328829130a59c7
title: Define Reconciliation Rules to Prioritize Values for the Unified Individual
collection: admin
version: current
locale: en-us
portal_url: https://docs.salesforce.com/admin/current/en-us/data/264-0-0/c360_a_omni_reconciliation.md
canonical_url: https://help.salesforce.com/s/articleView?id=data.c360_a_omni_reconciliation.htm&release=264.0.0&type=5
source_site: help.salesforce.com
content_type: documentation
content_hash: 2178e4222f6ff4cea5f7997890254ee0aa104bbffe159e17a0e8aa5f7cc8c12a
description: Reconciliation rules specify how to select the best value for a Unified field when that field can store only one value, such as a person’s first name.
products:
  - Data 360
release: "264"
---
# Define Reconciliation Rules to Prioritize Values for the Unified Individual

Reconciliation rules specify how to select the best value for a Unified field when that field can store only one value, such as a person’s first name.

In our example, Cumulus imported data from three different systems. Some fields, such as FirstName, can have different values within each system. For Data 360 to prioritize a value when activating an audience to Marketing Cloud Engagement, Cumulus must define reconciliation rules.

Cumulus chooses the Source Priority rule for most of their fields. Because their primary external database (System A) is its most trusted and up-to-date system, they intend to prioritize the values that come from this database.

1. In the Identity Resolution ruleset that you created, scroll to the Reconciliation Rules section.
2. To expand the fields, click **Individual**.
3. Select the fields to update.
4. Click the edit icon.
5. Select **Source Priority**.
6. Choose whether to **Ignore Empty Fields**.
7. Click **Save**.
8. [Match on Mobile SDK Shared Identifier](https://help.salesforce.com/s/articleView?id=data.c360_a_identity_resolution_unify_partyidentifier.htm&release=264.0.0&type=5 "Party identifier refers to the exact match of the Identification Number, Identification Name, and Party Identification Type fields in the Party Identification object. This type of match is useful for matching unique identifiers, such as government ID, first-party cookies, external MDM systems, and vendor-specific IDs.").
    
    ![Note](https://sf-zdocs-cdn-prod.zoominsoftware.com/tdta-data-data_cloud-264-0-0-production-enus/f3569962-3c9b-4f83-9d0c-b6a574e785da/images/icon_note.png)
    
    Note Customers must implement Mobile SDK to include both Data 360 and MobilePush modules.
9. Enter a name for the Match Rule and click **Next**.
10. Read the overview and click **Save**.![edit reconciliation rule in data cloud](https://sf-zdocs-cdn-prod.zoominsoftware.com/tdta-data-data_cloud-264-0-0-production-enus/f3569962-3c9b-4f83-9d0c-b6a574e785da/data_cloud/images/omnichannel_reconciliation_2.png)