Displaying Classification Classes 
Use
Two classes are required for the new functionality. One for purchase requisition items and one for other purchasing documents. These classes have already been created. In this step you can display the classes for purchase requisitions to familiarize yourself with the links with classification you will see later in Customizing for MM.
Procedure
Menu Path |
From the Classification node, choose Master Data ® Classes |
Transaction Code |
CL02 |
Field |
Data |
Class |
FRG_EBAN |
Class type |
032 |
.The system displays an overview list of the characteristics belonging to this class. The combination of fields in CEBAN forms the basis for the classification used in Customizing for MM to determine release strategies.
The same entries are shown on the Display Characteristic screen as in the Display characteristic area from the previous activity.
Again, you can see the same entries as in the Display characteristic area. Note the reference to table CEBAN.

The ABAP dictionary link to the communication structure CEBAN is displayed at class level. However, the link is created at characteristic level. When the characteristic is added to the class, the information about this link can be displayed at class level of the characteristic.
until the overview tree appears.