You may not create/change operating concerns in SAP system &

What causes this issue?

You cannot change the structure of an operating concern in the system
&V1&. You also cannot create a new operating concern.

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

System Response

You can only activate the data structures.

How to fix this error?

Error message extract from SAP system. Copyright SAP SE.