SAP Message 5C621 - Value type &1 is not permitted for manual bookings in plan &2.

Diagnosis
You are trying to create a posting with value type &V1& that refers tothe current processing plan &V2& and is not planned for manualpostings.

System Response
If you insert an edited account for the time being through an extendedaccount authorization you can create the posting.
In other cases this is not possible.

Procedure
Select a different, suitable value type for the posting. If necessarynotify your system administrator.