Hello Jacky,
if you search around SCN, you will find several Discussions about this.
In addition to reading them, here is a Wiki: https://wiki.scn.sap.com/wiki/x/A4A_E.
(Also, perhaps this Discussion should be moved to https://scn.sap.com/community/it-management/alm/solution-manager).
Best regards,
Laszlo
Message was edited by: Laszlo Badovszky