This step acts as a place-holder in a Mapping transformation a.k.a. sub-transformation.
It describes the places (0 or more) in the mapping where input is expected to occur.
You can think of this as a special input step that receives data from its parent transformation.
Name of the step.
The required input fields for this mapping (sub-transformation)
Here you can describe the input fields that are required by your sub-transformation.
Include unspecified fields, ordered by name
In certain borderline case, you not only want the required fields, but all of them. This option allows for this situation.
You can find the sample described below in your distribution over here:
samples/mapping/Mapping - simple mapping.ktr samples/mapping/Mapping - use simple mapping.ktr