What is external ID field in Salesforce?
The ‘External ID‘ field may be used to reference an ID from another, external system. External IDs are searchable in Salesforce and you can also use the Upsert API call with the External ID to refer to records when making changes via Data Loader.
What types of fields can be used as an external ID in Salesforce?
You can designate up to 25 External ID fields per object. External ID fields must be Custom text, number or email fields. External ID fields contain record IDs from systems outside Salesforce. You can use the upsert call to match against External ID fields during import or integration.
Does external ID have to be unique in Salesforce?
Salesforce allows you mark up to 3 fields as External IDs and these fields must be text, number or email field types. Values in these External ID field must also be unique and you can also determine whether or not value are case sensitive. There are three ways that you typically use External ID field.
How do I change the external ID field in Salesforce?
- Get the list of all the External IDs you want to update.
- Do a SOQL query to Salesforce to see which of those records exist in Salesforce already.
- Only do the upsert for the records that are already in Salesforce (by this stage you could also do an update() as the SOQL query could bring back the Salesforce ID)
How do I use an external ID in Salesforce?
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.
When would a developer use Upsert and external IDs?
To migrate customizations from a sandbox to production. C. To load related records without knowing Salesforce record IDs.
What is external ID in the Upsert operation?
External Id is a unique key or primary key that is different from salesforce Id. It is slightly created by the user in order to insert, upsert, delete and update records in Salesforce. External Id cannot be duplicated.
Which statement is true about an external ID field?
The field must contain at least one number and at least one letter. D. The field can be unique based on case-sensitive or case-insensitive values.
Which two statements are true about an external ID field?
The field must contain at least one number and at least one letter. D . The field can be unique based on case-sensitive or case-insensitive values.