Diagnosis
In the transaction "Enter Non-Allocatable Activities", you enteredbusiness process &V1&, which has allocation category &V2&. However,because the document already has allocation category 2, 3, or 5(indirect allocation), you cannot use the given allocation category forthis document.

System Response
Within a document, you can use only the same allocation category,either category 3 (indirect allocation) or category 4 (non-allocatable).

Procedure
Enter only allocation categories 2, 3, or 5 for this document, ordelete all document items and repeat your entries.