>ABAP CLASSIFICATION CONCEPT


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ABAP CLASSIFICATION CONCEPT

Meaning
Classification is the process of assigning objects to classes and characteristic values to these objects. The module in SAP which enables the classification of objects is known as Classification system. It is the means by which an object is classified based on its properties. Classification concept provides us with the flexibility to keep track of various features that are assigned to an object. Also these characteristics can be used across multiple classes and hence multiple objects. And using the same characteristics different values can be assigned to different objects.
Purpose
When you are managing a large number of objects, you must be able to group these objects according to particular features. Using the Classification System you can create a hierarchically structured classification system for your company. This enables a proper and easy way to manage various objects and its features.

Components
Classification system consists of:
1. Object Type
2. Characteristics
3. Classes
4. Class Type

Object Type: The entities in the classification system which are to be classified are known as objects. The type of object that is being classified is known as object type. Example: material, Functional Location, Equipment. The object types are identified using the object table i.e. the primary table which contains the objects. Ex. Table MARA for material, IFLOT for Functional Location, EQUI for Equipment.

Characteristics: Characteristics are the properties based on which the entity is to be classified. Example: Density, Location, Model Number. It has a set of values (characteristic values) which are assigned to the Objects. These are the characteristic values which are used to differentiate various objects, i.e. different objects can have different values for the same characteristic, as the value range is provided

Classes: A group of characteristics logically grouped together is known as a class. A class is assigned to an object in the classification system. Thus the object can have all the characteristics that are assigned to the class, i.e. this is the upper level of the hierarchy to which the characteristics can be assigned. A single class can have number of characteristics. Similarly a characteristic can be linked to several classes.

Class Types: A class type is the unit of control for classes. The class type is defined for a specific object type such as material. The class type can then be used to classify objects of its associated object type. A class can be assigned only to one class type i.e. a class type contain one or more classes associated with it. The class type determines the objects that can be classified for a particular class.

HEIRARCHY
Object Type => Class (Type) => Characteristics => Values

Table Name Description
TCLT Classifiable Objects – Stores the object table
TCLA Class Types
KLAH Class Header Data
KSSK Allocation Table – Object to Class
KSML Stores the characteristics associated with a class
INOB Link between internal object number and the object in the object table
AUSP Characteristic values
CABN Characteristics
CAWN Characteristic Values
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