Sap menu accounting missing

Dear All
In sap menu accounting is missing -other modules like logistics and human resources can
be seen-
till yesterday we are able to post accounting entries through sap menu-accounting-
from today onwards I am not able see
How to activate accounting in sap menu


maybe somebody has modified the s000 - menu?
if you have other systems where the sap menu is still ok, you can quickly transport the menu from there (SE43). But maybe only the area menu, where that node is contained has been changed, then you need to transport that area menu only.
b.rgds, Bernhard