---
schema_version: "1"
id: ed922d5e353aa042e8ecd423af9388e5bad96bfe58e579c9642dc5e0453be634
title: Standard Lead Duplicate Rule
collection: admin
version: current
locale: en-us
portal_url: https://docs.salesforce.com/admin/current/en-us/sales/264-0-0/duplicate_rules_standard_lead_rule.md
canonical_url: https://help.salesforce.com/s/articleView?id=sales.duplicate_rules_standard_lead_rule.htm&release=264.0.0&type=5
source_site: help.salesforce.com
content_type: documentation
content_hash: 4a9e1a8406159a9f2f140b5b96b79583d6cd0e58fc3ce6d90d2faf873b5fd9b3
description: "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."
products:
  - Sales
  - Sales Enablement
release: "264"
---
# Standard Lead Duplicate Rule

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.

## Rule Details

<table class="slds-table slds-table_bordered slds-max-medium-table_stacked slds-m-bottom_small "><colgroup><col style="width:25%"> <col style="width:75%"></colgroup><tbody><tr class=""><td class="slds-cell-wrap" style="vertical-align:top;">Rule Name</td><td class="slds-cell-wrap" style="vertical-align:top;">Standard Lead Duplicate Rule</td></tr><tr class=""><td class="slds-cell-wrap" style="vertical-align:top;">Description</td><td class="slds-cell-wrap" style="vertical-align:top;">Handle leads that duplicate other leads and contacts that duplicate leads.</td></tr><tr class=""><td class="slds-cell-wrap" style="vertical-align:top;">Object</td><td class="slds-cell-wrap" style="vertical-align:top;">Lead</td></tr><tr class=""><td class="slds-cell-wrap" style="vertical-align:top;">Default Record-Level Security Setting</td><td class="slds-cell-wrap" style="vertical-align:top;">Enforce Sharing Rules</td></tr></tbody></table>

## Actions

An action specifies what happens when a user starts creating a duplicate record.

<table class="slds-table slds-table_bordered slds-max-medium-table_stacked slds-m-bottom_small "><colgroup><col style="width:25%"> <col style="width:75%"></colgroup><tbody><tr class=""><td class="slds-cell-wrap" style="vertical-align:top;">Default Action On Create</td><td class="slds-cell-wrap" style="vertical-align:top;">Allow: The user is alerted but allowed to create the record.</td></tr><tr class=""><td class="slds-cell-wrap" style="vertical-align:top;">Default Action On Edit</td><td class="slds-cell-wrap" style="vertical-align:top;">Allow: You can generate a report of duplicates created when this rule runs.</td></tr><tr class=""><td class="slds-cell-wrap" style="vertical-align:top;">Customizable Alert Text</td><td class="slds-cell-wrap" style="vertical-align:top;">Use one of these records?</td></tr></tbody></table>

## Matching Rules Included in This Duplicate Rule

<table class="slds-table slds-table_bordered slds-max-medium-table_stacked slds-m-bottom_small "><colgroup><col style="width:25%"> <col style="width:75%"></colgroup><tbody><tr class=""><td class="slds-cell-wrap" style="vertical-align:top;">Matching Rules</td><td class="slds-cell-wrap" style="vertical-align:top;">Standard Lead Matching Rule, Standard Contact Matching Rule</td></tr><tr class=""><td class="slds-cell-wrap" style="vertical-align:top;">Description</td><td class="slds-cell-wrap" style="vertical-align:top;">Match leads that duplicate other leads and contacts that duplicate leads.</td></tr><tr class=""><td class="slds-cell-wrap" style="vertical-align:top;">Default Field Mapping</td><td class="slds-cell-wrap" style="vertical-align:top;">Mapping Selected</td></tr></tbody></table>

#### See Also

- [Standard Contact Matching Rule and Standard Lead Matching Rule](https://help.salesforce.com/s/articleView?id=sales.matching_rules_standard_contact_rule.htm&release=264.0.0&type=5 "The standard contact matching rule and standard lead matching rule identify duplicate contacts and leads using match keys, a matching equation, and matching criteria. They’re activated by default.")