After maintaining cost center, activity, KP26 when I am going for making cost estimation (CK11N). System is giving a message "<b>No structure could be determined for internal activity X (COST CENTER Y)"</b>. And this message for all activities.
Elaborately the message is "<u><b>Check the master data for activity type X of cost center Y. It is possible that no activity price calculation has been carried out for the cost center".</b></u>
Thanks & regards,