Creating Calculation Types for Delivered
Calculation Categories 
Use
You use this transaction to create calculation types and assign them to calculation categories. The calculation types that you define here are then used in two additional steps of PSA calculation configuration.
First, the system uses calculation types to identify specific calculations when you assign validation rules for rolling up cost data from the source to the PSA ledger. The calculation type is stored on the same line in the PSA ledger with the cost data derived from the source ledger. During calculation processing, the cost data is extracted from the PSA ledger based on this calculation type.
Second, the calculation types you define here become available to be assigned to PSC and product combinations in the Assigning Calculation Types and Schemes to PSC/Product Combinations transaction. These calculation schemes contain percentages to be applied to the base amount for volume, revenue, or cost in computing amounts for specific types of calculations.
These two additional steps determine the input data and calculation percentages for the types of calculations delineated by the calculation types you define here.
Calculation Categories
With this transaction you assign a calculation type to a calculation category. A single calculation category is delivered for each class or grouping of data that results from PSA calculations processing.
For some categories this single item might be sufficient to support necessary calculations. Only one category is required to represent total production volume and revenue, and one should be sufficient to represent the government’s royalty take.
Subdividing Delivered PSA Cost Categories
To provide a thorough accounting or to satisfy the contractual requirements of the production sharing contract (PSC) concerning how calculations should be performed, however, it may be necessary to sub-divide the delivered categories for cost. In the PSA system, you can subdivide calculation categories 5 for Cost and C for Other Cost by assigning multiple calculation types to those categories.
For example, costs can be separated into capital expenses and operating expenses. As with all the categories in the PSA system, only a single calculation category is delivered for cost. The first step in differentiating capital from operating expenses in PSA calculation processing would be to create a calculation type for each of these types of expense: one for capital and one for operating expense. Both new calculation types would be assigned to the same delivered calculation category (that is, 5 forCosts).
This differentiation between operating and capital costs is just one example of how calculation types can be used to create subdivisions of delivered categories. Any category, including 5 for Costs, can be subdivided according to the specific business requirements governing the PSC.
Prerequisites
There are no prerequisites for setting up calculation types based on delivered calculation categories, but you should have a clear sense of the results you require from calculation processing for accounting purposes and the sequence in which the various steps in calculations will be executed.
Procedure
1. At the SAP Easy Access menu, choose Accounting ®Production Sharing Accounting ® Basic Settings ®Calculation Types.
The Change View Calculation Type Master: Overview screen appears.
2. Choose New entries and enter the following data:
· In the Calc Type field, enter the number for the new calculation type
Calculation types defined by SAP are in the range below 100 while customer calculation types are in the range above 100.
· In the Name field, enter a name for the new calculation type
· In the Long text field, enter a long description of the new calculation type
· In the Calculation Category field, enter the code for the delivered calculation category to which the new calculation type is assigned
3. Save the entries.