The match output options that you select determine the output ports on the transformation. For example, the transformation creates a ClusterId port and ClusterSize port when you select a clustered output type.
Select the type of transformation output that you need, and review the ports on the transformation.
If you update the match output type, verify the output port configuration on the transformation after you do so. If you use the transformation in a mapping, you might need to reconnect the output ports to the downstream objects in the mapping.