Hi...
Refer to below sap help description.
The system derives the functional area according to the following logic:
- The system derives the functional area from the master data of the assigned objects. If an object is assigned during a posting, the system checks whether a functional area has been entered in the master record of the object. The system retains this functional area. However, it may be overwritten by subsequent checks.
- The system derives the functional area from the master record of the G/L account or the cost element. The system checks whether a functional area is entered in the master record of the cost element or the P&L account. This functional area overwrites the functional area derived from the assigned object.
- The system derives the functional area via substitution for the component
Financial Accounting, Event 0005
. If a functional area has already been defined, this is overwritten with the functional area obtained via substitution. Definition of a substitution is necessary:- Where you are not able to enter a functional area in the master data of an object, for example business process or real estate objects.
- When you want to specify exceptions where derivation from the object should not occur.