i'm trying to copy Actual To Plan using KP98 transaction.
I get the message "Primary cost element ###### is not supported in secondary cost planning". There is no long text to go along with this error message to explain what it really means. I am not trying to do any "secondary cost planning", I am trying to do "primary cost planning" on these primary cost elements. Any idea why the system seems to be trying to do something it is not intended to do?