MDGF - Uniqueness of Cost Center Numbers

Hi,

We have implemented SAP MDG-F v 7.0 and are live for cost centers.  We have multiple controlling areas and there is a requirement to ensure that the cost center numbers across all the controlling areas are unique, i.e. no duplicate cost center numbers across controlling areas.  I have couple of questions in this regard:

1. Can we set up duplicate check functionality to prevent duplicate cost center numbers across controlling areas?

2. Are there any other alternative options to resolve this issue?

Thanks,

Nandu