The default mapping type in DataHub is group type mapping. If you prefer mapping node types to mapping the nodes one-by-one before copying and/or synchronizing them, you can select the Group Type Mapping mode from the Mapping Mode drop-down list. It arranges all nodes according to their types to allow you to see the grouped types instead of individual nodes arranged in a tree structure. You can select a type from the source tree and map it to another type in the target tree.
Note
Each formal module in DOORS is categorized as one node type.