Hi Prasad,
This post has information about registering SAM:
sam.nrel.gov/forum/forum-general/1046-registering-sam.html
I do not see your email address in the registration database, so it does not look like you completed the SAM software registration process.
There is a difference between registering in the SAM software to request a software key and registering on the SAM website to post on this forum.
Best regards,
Paul.