在资料里看到这么一段:
Go to transaction OKEG in your DEV and you will see that you will not abe able to modify CC, business area, currency and Profit center filed which are mandatory. Rest of the field you can modify..
if anyone wants to modify the cost center master data screens, that can be done through user exit available in SAP. You can explore the following node:
Cost Center Accounting --> Master Data --> Cost Centers --> Program Enhancements for Cost Center Master Data.