Hi John,
the report is comparing the list of 'old' characteristic values with the list of 'new' one. If the content of both lists is identical, you get the message "No Change Possible". As mentioned in note 537346 the program can be used if you have added new characteristics in a class for a KMAT. The new value must be calculated/set with a dependency. It looks like in the case you have mentioned, the system could not find any new characteristics or new values.
Maybe you can check the changes you have done on your configuration model. It looks like the changes do not lead to a new characteristic or new values.
Hope this helps.
Regards,
Juergen