Each value assignment type is represented by a class of class type 100. In the Classification System SAP component, you can assign any number of characteristics to a class. See also
Creating Characteristic Fields in EH&S.In Customizing for Product Safety, a value assignment type is assigned to each class. In this way, the value assignment type inherits the characteristics of the class. Value assignment types can be of categories property, composition, or listing.
Characteristics can have the following data types:
Numerical characteristics feature a default unit of measurement. In fields such as these, you only need to enter the value as a number. The unit of measurement is added after you have chosen Confirm.
You can only use other units of measurement, if these are contained in the R/3 unit of measurement table, feature identical dimensions, and if the conversion parameters have been maintained.
If you have created new characteristics, you must execute the Match up value assignment type - characteristics function in master data matchup to update the display.
Relationship Between Value Assignment Type and Class