--- schema_version: "1" id: 857d75ea07638f2f273156959a4a911b563c647d8c3ce15fa1bda34410ae890d title: Standard Contact 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_contact_rule.md canonical_url: https://help.salesforce.com/s/articleView?id=sales.duplicate_rules_standard_contact_rule.htm&release=264.0.0&type=5 source_site: help.salesforce.com content_type: documentation content_hash: 30a5f072dafa229faf4b474721d15d3a1cf8b738ad43709f10405440c90f86e5 description: "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." products: - Sales - Sales Enablement release: "264" --- # Standard Contact Duplicate Rule 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. ## Rule Details

Rule Name	Standard Account Duplicate Rule
Description	Handle contacts that duplicate other contacts and leads that duplicate contacts.
Object	Contact
Default Record-Level Security Setting	Enforce Sharing Rules

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

Default Action On Create	Allow: The user is alerted but allowed to create the record.
Default Action On Edit	Allow: You can generate a report of duplicates created when this rule runs.
Customizable Alert Text	Use one of these records?

## Matching Rules Included in This Duplicate Rule

Matching Rules	Standard Contact Matching Rule, Standard Lead Matching Rule
Description	Match contacts that duplicate other contacts and leads that duplicate contacts.
Default Field Mapping	Mapping Selected

#### 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.")