In this step, you specify the keys for the individual shipping material types that are defined in your company. When you create an inbound delivery against a shipping notification, you can then assign a shipping material type as a transport identification code.
Assign keys for the individual shipping material types (e.g. key "0001" for "container").
For more detailed information, refer to the
documentation in Customizing for Logistics General under
Handling Unit Management -> Basics ->
Define Shipping Material Types.