By default, None is selected as the type field. When None is selected, all features are used in the conflation and share the same conflation method, buffer distance, and destination class. However, there are situations in which you may want to exclude features from the conflation or treat them differently in terms of a conflation method, buffer distance, and/or the destination class.
Learn more about toggling the use of types
Different conflation methods, buffer distances and destination classes are used for different type values.