You do not have the authorization to change cost center groups.

What causes this issue?

In controlling area &v1&, you are not authorized to change cost center
group &v2&.

System Response

You cannot change the hierarchy assignment or the assignment to the
cost center group.

How to fix this error?

When you create or change cost centers or business processes, have your
authorization checked or enter another cost center group.
Deleting cost centers or business processes also involves changing the
assigned cost center group since the cost center has to be removed from
the cost center group. Therefore have your authorization for changing
cost center groups checked.

Error message extract from SAP system. Copyright SAP SE.