The Retrieve step defines how source data is queried from a connected Salesforce org. It's the entry point for record selection in both #Batches and #Data Lists.

• In #Batch : Retrieve specifies the source records for batch execution—similar to the start() method in Salesforce's Database.Batchable interface.

• In #Data List : Retrieve defines the SOQL query used to display records to users in the UI.

At runtime, DSP automatically fetches only the fields required by downstream steps (Scoping , Match , Mapping ). Fields selected in the Retrieve query are used mainly for preview and display.