No cost center groups exist for the entry

What causes this issue?

You have requested possible entries for the cost center groups.
However, no cost center groups have been created yet in the respective
controlling area.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Please create the standard hierarchy first, and then assign the cost
centers you want created to the respective nodes of this hierarchy. You
can then use these nodes as groups within cost center planning.
In addition, define alternative groups that meet your planning
requirements. The functions for hierarchy maintenance are available
for this purpose.

Error message extract from SAP system. Copyright SAP SE.