SAP Message KP603 - Plan/SOP order &: Reference to cost center/activity type is missing.

Diagnosis During processing of simulated plan or SOP order &v1& for material &v2&in plant &v3&, no cost center or activity type could be determined forone or more activities. System Response The affected activity quantity is not transferred. Procedure Check the work plan settings and that of the associated work center,maintain missing references to a cost center or missing activity types,and repeat the transaction.