When you use a parameter as the source object to provide data for a Normalizer transformation, use a Named Fields field rule in the Normalizer to define incoming fields.
When you configure a Normalizer transformation, you define the field mappings between the incoming fields and the normalized fields. When you use a parameter for a source object, field names do not appear in the list of incoming fields until you use a Named Field rule to add fields.
To add fields, on the Incoming Fields tab of the Normalizer transformation, create a Named Fields rule. In the Include Named Fields dialog box, click Add and enter the name of an incoming field.
Create fields to represent all of the source fields that you want to use in the Normalizer transformation.