What is a external id in salesforce and give me example?
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Answer / Naveen Kumar Soreng
An External ID is a unique identifier on a Salesforce record that can be used to relate records across different objects or external systems. For example, if you have a Customer object with an External ID field named 'AccountId' and it contains the value '1234567890', this can be used as a reference in another system to identify the same customer. Note that External ID fields must be unique and cannot contain auto-number fields or formula fields.
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