Class & is not supported for order planning

What causes this issue?

You want to go to maintenance of the CO part. However, the planning
parameters are assigned to a class that does not allow you to use them
for CO planning.

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?

Change the assignment of the planning parameters such that you can also
use the planning parameters in cost center and/or order planning, or
Create new planning parameters for controlling.

Error message extract from SAP system. Copyright SAP SE.