---
schema_version: "1"
id: 97c38f67a0d80a1d7073d3a11abce42fc4b4f182d75afb4d5a8244c273db3172
title: Standard Duplicate Rules
collection: admin
version: current
locale: en-us
portal_url: https://docs.salesforce.com/admin/current/en-us/sales/264-0-0/duplicate_rules_standard_rules.md
canonical_url: https://help.salesforce.com/s/articleView?id=sales.duplicate_rules_standard_rules.htm&release=264.0.0&type=5
source_site: help.salesforce.com
content_type: documentation
content_hash: bf4dbb121c9f0726e659be6b7d3b04bd6ae938a08b3a93086aab4d109f33c21f
description: Each standard duplicate rule includes a corresponding standard matching rule that determines how records are identified as duplicates.
products:
  - Sales
  - Sales Enablement
release: "264"
---
# Standard Duplicate Rules

Each standard duplicate rule includes a corresponding standard matching rule that determines how records are identified as duplicates.

### Required Editions

<table class="slds-table slds-table_bordered slds-max-medium-table_stacked slds-m-bottom_small edition"><colgroup><col></colgroup><tbody><tr class=""><td class="slds-cell-wrap" style="vertical-align:top;">Available in: Lightning Experience and Salesforce Classic</td></tr><tr class=""><td class="slds-cell-wrap" style="vertical-align:top;">Available in: <strong>Essentials</strong>, <strong>Professional</strong>, <strong>Enterprise</strong>, <strong>Performance</strong>, <strong>Unlimited</strong>, and <strong>Developer</strong> Editions</td></tr></tbody></table>

- **[Standard Account Duplicate Rule](https://help.salesforce.com/s/articleView?id=sales.duplicate_rules_standard_account_rule.htm&release=264.0.0&type=5)**  
    The standard account duplicate rule defines what happens when a user views an account with duplicates or starts to create a duplicate account. It’s activated by default.
- **[Standard Person Account Duplicate Rule](https://help.salesforce.com/s/articleView?id=sales.duplicate_rules_standard_person_account_rule.htm&release=264.0.0&type=5)**  
    The standard person account duplicate rule defines what happens when a user views a person account with duplicates or starts to create a duplicate person account. To use this rule, enable person accounts, and then activate the standard person account matching and duplicate rules in Setup.
- **[Standard Contact Duplicate Rule](https://help.salesforce.com/s/articleView?id=sales.duplicate_rules_standard_contact_rule.htm&release=264.0.0&type=5)**  
    The standard contact duplicate rule defines what happens when a user views a duplicated contact or starts to create a record that duplicates a contact. If your org was created in Summer ’17 or later, this duplicate rule includes a cross-object matching rule: It matches contacts that duplicate other contacts and leads that duplicate contacts. If your org was created before Summer ’17, you can get the same functionality by activating a new duplicate rule available in Setup. Otherwise, your default rule matches only contacts that duplicate other contacts.
- **[Standard Lead Duplicate Rule](https://help.salesforce.com/s/articleView?id=sales.duplicate_rules_standard_lead_rule.htm&release=264.0.0&type=5)**  
    The standard lead duplicate rule defines what happens when a user views a lead with duplicates or starts to create a record that duplicates a lead. If your org was created in Summer ’17 or later, this duplicate rule includes a cross-object matching rule: It matches leads that duplicate other leads and contacts that duplicate leads. If your org was created before Summer ’17, you can get the same functionality by activating a new duplicate rule available in Setup. Otherwise, your default rule matches only leads that duplicate other leads.