Each legal regulation includes a list of materials requiring export licenses and assigns an alphanumeric code to each of these materials. In R/3, these code numbers are called export control classes.

The table below lists some of the export control class number systems used by different countries.

Country	Source of the export control class number
Germany	The export list number from the Export list
USA	The Export Control Classification Number (ECCN)
United Kingdom	The classification from the International List (IL)
Japan	The classification from Cargo List 1 and 2