What occurs in an upsert operation if the external ID is matched on more than one record?

What occurs in an upsert operation if the external ID is matched on more than one record?

If the external ID is matched once, the existing object is updated. If the external ID is matched multiple times, an error is reported. When batch updating multiple objects where the external ID is the same for two or more objects in your batch call, those records will be marked as errors in the UpsertResult.

How do you use upsert in data loader?

1. Open the Data Loader.
2. Click Insert, Update, Upsert, Delete, or Hard Delete.
3. Enter your Salesforce username and password.
4. Choose an object.
5. To select your CSV file, click Browse.
6. Click Next.
7. If you are performing an upsert, your CSV file must contain a column of ID values for matching against existing records.

What is a external ID in Salesforce and give me example?

External ID in Salesforce is a custom field that has the “External ID” attribute checked meaning that it contains unique record identifiers from a system outside of Salesforce. When we select this option the import wizard will detect existing records in Salesforce that have the same External Identification.

How to create an external ID in upsert?

Create a External Id field on Account as Account_Unique_Number__c and mark it as External Id and unique while creating it.Now we will create a new record using upsert. As there is no record in Account with Account_Unique_Number__c as 00001, system will create a new record.

How to insert or update a record using an external ID?

You can use the sObject Rows by External ID resource to create records or update existing records (upsert) based on the value of a specified external ID field. If the external ID is not matched, then a new record is created according to the request body.

How to insert or update a record using an upsert?

A Line_Item__c record with a LineItemExtID__c value of 456 does not exist. This is the record that gets created and associated to the Merchandise__c record. Notice that the related Merchandise__c record is referenced using the Merchandise__c’s external ID field. The HTTP status code is 201 (Created).

Can a field be set to true in upsert?

Any field with the idLookup attribute set to true (which includes Name fields on custom objects, but not all Name fields on standard objects) can be used for record matching in the upsert () call. This is stated as such in the API doc but not in the Apex doc, but applies to Apex as well.