Activity › Forums › Salesforce® Discussions › What is the external id in Salesforce?

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  • Piyush

    Member
    April 29, 2016 at 2:22 pm

    Hello Satykam,

    An external ID is a custom field that has the “External ID” attribute, meaning that it contains unique record identifiers from a system outside of Salesforce. When you select this option, the Data Import Wizard detects existing records in Salesforce that have the same external ID.

  • Avnish

    Member
    September 30, 2018 at 1:32 am

    Hello,

    External IDs are commonly used to store unique record identifiers from external systems and allow for routinely loading data into Salesforce without having to prepare your import file with existing or related Salesforce record IDs each time. 1

    Thanks.

  • Avnish

    Member
    September 30, 2018 at 1:33 am

    The other advantage of external Id is -  Fields marked as External Ids are searable.
    Salesforce allows you mark up to 3 fields as External IDs and these fields must be text, number or email field types

    Thanks

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