In my organization we installed SAP-R3 FI-CO module many years ago. We we using just that module for like 10 years. We created near 50,000 Cost Centers since then.
Recently we actived the HCM module. Organizational Units, Positions, etc were created. Cost centers were assigned to Organizational Units, to control the payroll expenses, and all that has worked fine so far.
All over this years, without having HCM working, an indepedent application (a DWH) has serve the purpose of maintain the relationship between a cost center and an organizational unit, for reporting use, since the Cost Center doesn't have a place to be assigned to an Organizational Unit, in FI-CO.
Now with the HCM module active, we now have the relationship between an Organizational Unit and one Cost Center, but just one, the one that pays the bills. But we have thousands of Cost Centers that are merely projects or serve purpouses different of payroll.
My question is, how or where can I establish a link between a Cost Center and an Organizational Unit? Is it a place in HCM where we can assign all the Cost Centers belonging to certain Organizational Unit, even if that's not for payroll?
Is there a place, anywhere else in SAP to assign this relationship?
The only thing we think of is the Cost Center Standard Hierarchy, but that implicates maintaining a copy of the Organizational Unit tree by manually replicating it.
Is this the correct path?