The Field Organizer is a processor Function used to rename fields (columns) in your input data as per your output requirement.
The Source and Target fields are populated with all of the field names from the preceding Function in the original order. The original name is selected in the Source field. You rename the field by entering a new name in the Target field.
The order of the columns displayed during the configuration of the Function may vary in the final output.
If you include a field in the Source field and leave the Target field empty, it will be excluded.
For an example of how to use the Field Organizer in a stream, see Stream using Amazon S3 Functions - Acme EV.