Diagnosis
You entered activity type &V1& in the transaction "Enter Non-Allocatable Activities". Activity type &V1& in cost center &V2& belongsto category &V3&. Since the document already contains category 3(indirect allocation) activity types, you cannot use the activity typeentered in the document.

System Response
You must enter activity types of the same category in a document. Youcan either enter category 3 (allocated indirectly) or category 4(non-allocatable) activity types.

Procedure
Enter only activity types of category 3 in the document or delete theitems entered and start again.