Setting Up an Operating Concern 
Use
After defining the characteristics and value fields, you can create the operating concern itself. To do this, you have to maintain the attributes and data structures for the operating concern. You define a fiscal year variant and the desired currency settings in the attributes. You select the desired characteristics and value fields in the data structures. After you have made this choice, you generate the data structure.

From a technical standpoint, data structures determine the structure of the database tables (ABAP Dictionary). These are created when you generate the data structures. These tables are independent of the client, which means they are equally accessible in every client of a system.
Prerequisites
The following individual activities are required:
Procedure
The following steps do not cause a new operating concern to be defined. Instead, the existing structures are displayed.
Menu Path |
Controlling ® Profitability Analysis ® Structures ® Define Operating Concern ® |
Transaction Code |
KEA0 |
You now see that the operating concern currency is EUR and that the company code currency and the profit center currency have been activated.
The fiscal year variant is K4 (calendar year with 4 special periods). The fiscal year variant is of significance for the documents transferred into Profitability Analysis. It ensures that the correct billing period is used. As a rule, you should use the same variant as that used for the assigned controlling areas. It is only by doing so that you can, for example, assess cost center costs to Profitability Analysis.
On the screen Display Data Structure: Characteristic Screen, you find the same characteristics as in the previous activity Displaying Characteristics in the Operating Concern.
A further table with the title copy from then appears, listing all characteristics defined for the system. In the change mode, you could now transfer additional characteristics to the operating concern IDEA.
Under Data structure, you also see the chosen value fields for the operating concern IDEA, and on the right, under Copy from, you see additional value fields that you were able to add to the operating concern IDEA in the change mode.
The dialog box tells you that all tables for the operating concern are active.
If the operating concern had not been generated, you would then have to choose Generate environment.

If the operating concern is not generated, no postings can be transferred to the data tables of the operating concern. Instead, an error message would be issued for every business transaction that relates to CO-PA.