An input rule defines the ports that the dynamic port generates. You can choose to include or exclude ports. You can also choose to rename and reorder the generated ports.

Create a selection rule to define the generated ports that the Data Integration Service processes at run time. Create selection rules within a port selector. A port selector contains ports that you can reference in an expression or in a join or lookup condition. You can configure more than one port selector in a transformation based on the metadata changes that you anticipate at run time.