I have already gone through Recommended guides & Sap Notes/PAM where it mentions that we need to upgrade the OS /DB to either Windows 2008/2012/2014 and Sql 2008/2012/2014. New OS : Windows 2012 & New DB : MSSQL Server 2012 Target System : Upgrade to ECC 6 with EHP 7 ( Abap Stack) OS : Windows 2003 & DB : MSSQL Server 2005 Source System : ECC 6 /NW SPS 9 with Kernel 700 I am in the process of implementing the upgrade project and would like to have your valuable inputs to achieve the completion of project.