When the MSC2 and C55 posting control is tested i do not get the expected result.
The C55 in my understanding should use the Resource - Maintenance information - Department
The MSC2 in my understanding should use the Employee Maintenance information ie the HCM module Employee Assignment - position.
The current behavior for C55 and MSC2 seems to be 100% the same. The Resource - Maintenance information - department field is used as field for the posting control.
Please verify and explain why two different posting controls has been created and how to use the HCM Organisation position in the T1 and T2 setup.
The most common setup is to use HR cost center in the T2 rule, as the home cost center will get the credit posting in a best practice setup.