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Configure Duplicate Detection and NPSP Contact Merge
Set up duplicate detection and contact merge to keep your contacts organized and up-to-date.
- Set Up Duplicate Detection
Set up duplicate detection with matching rules to identify duplicate contacts. - Set Up NPSP Duplicate Rule Settings
Set up duplicate rules to find duplicate contacts before any potential duplicates are created. - Customize Contact Merge Columns
Customize the columns that appear in the Contact Merge search results. - Set Up NPSP Potential Duplicates Pane on Contacts Page
To quickly see if a contact has potential duplicates and to resolve those duplicates, set up the NPSP Potential Duplicates component on the Contacts page.
Set Up Duplicate Detection
Set up duplicate detection with matching rules to identify duplicate contacts.
Set Up Matching Rules
Matching Rules tell Salesforce how to look for duplicate Contacts. A Matching Rule compares field values to determine if a record is similar enough to another record to be considered a duplicate.
- Click
, then click Setup. -
From Setup, enter Matching Rules in the Quick Find box, then click Matching Rules.
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Click New Rule.
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For Object, select Contact, then click Next.
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Give the rule a name and an optional description.
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Select the fields to compare, and the matching methods.
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Click Save.
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Click Activate.
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Continue to the next section to create a Duplicate Rule.
For more information, see Customize Matching Rules in Salesforce Help.
Set Up Duplicate Rules
Duplicate Rules tell Salesforce what to do when it finds potential duplicates as users create new Contacts. To see duplicates on the Contact Merge tab, Duplicate Rules must have both Action on Create and Action on Edit set to Allow and Report.
- Click
, then click Setup. -
From Setup, enter Duplicate Rules in the Quick Find box, then click Duplicate Rules.
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Click New Rule, then select Contact.
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Give the rule a name.
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Next to Action on Create, select Allow and Report.
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Next to Action on Edit, select Allow and Report.
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Under Matching Rules:
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Select Compare Contacts With Contacts.
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Select the Matching Rule you created.
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Optionally add additional conditions.
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Click Save.
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If you have Unlimited Edition or Salesforce.org Insights Platform Data Integrity, continue to the next section.
For more information, including considerations for managing multiple Duplicate Rules, see Duplicate Rules in Salesforce Help.
Set Up NPSP Duplicate Rule Settings
Set up duplicate rules to find duplicate contacts before any potential duplicates are created.
Before using Contact Merge, complete this one-time setup task. If you want to use Duplicate Rules for finding duplicates it's necessary to set this up before any potential duplicates are created. If you have custom code with the AllowSave property set to a value, that value takes precedence over this setting.
Customize Contact Merge Columns
Customize the columns that appear in the Contact Merge search results.
Set Up NPSP Potential Duplicates Pane on Contacts Page
To quickly see if a contact has potential duplicates and to resolve those duplicates, set up the NPSP Potential Duplicates component on the Contacts page.
- From a Contact page, click
and select Edit Page. - If the Potential Duplicates component is on the page layout, delete it.
- From the Custom - Managed component list, drag the NPSP Potential Duplicates component to the page layout.
- Clear the checkboxes if you don't want to show the number of potential duplicates in the page card or in the toast message.These options are selected by default
- Save and activate your changes.

