What is the purpose of the Upsert action in Salesforce operations?

The Upsert action in Salesforce operations is specifically designed to handle both creating and updating records in a single operation. This functionality is particularly valuable when you are unsure whether a record already exists or not. By using upsert, the operation checks for the existence of the record based on a specified unique identifier, such as an ID or an external ID field.

If the record is found, Salesforce updates the existing record with the new values provided; if the record is not found, it creates a new record with the specified data. This streamlines the data management process, reducing the need for separate create and update operations, thereby improving efficiency and minimizing the potential for errors. The other options, while related to data handling in Salesforce, do not accurately describe the functionality of the Upsert action.