In this step, you define your own assignments of actual values posted on investment measures to budget categories. You make these definitions with the help of a customer enhancement project.
For example, you can use this method in order to have assignment according to cost elements.
The standard setting is for the system to separate expense that can be capitalized (that is settled to assets) and expense that cannot be capitalized (that is settled to CO receivers).
Generally, this standard splitting of actual values is sufficient.
For more information, see the component documentation on the SAP enhancement AAIP0001.