After upgrading, you meet symptom such as:-
SAPLKACB or LMIGOPBO
3. Before upgrading in the specific posting subscreen SAPLKACB / 1001 is used.
But after upgrading the subscreen SAPLKACB / 1016 is used.
Reason and solution:
The screen 1016 was first delivered by SAP Note 1137272 (1.), It is a side effect of this SAP Note (2.3)
As the solution , you can implement note 1668328, or use the workaround introduced in this note.