Hi Nagendra,
Thanks for your reply. It certainly provides some clarification about the process. However, process to run the pre-upgrade checklist against the Dynamics 2012 environment is still not clear.
This links say to install a KB to run a pre-upgrade checklist in Dynamics 2012 environment using an XPO ;
docs.microsoft.com/.../upgrade-overview-2012
However, this links suggests to install the system analyzer using the LCS, to do the Pre Analysis of data :
docs.microsoft.com/.../upgrade-analyzer-tool
Not sure, which is the right process. XPO suggested in the first link is not available to download either.