Thank you for your reply.
I put lots of effort on my application with score 460 along with lots of hope that I will obtain it. They cancelled like this is a sad news. Besides, I have already obtained a wrok permit and I had no crime in anywhere ever so its unfair to cancel suddenly. I am an expert person who tend to build my life and work there and they have already process my application so they know about me and my background. I am not a person who suddenly submit application and they are just started to look at they profile. That is why I am saying they may have everything in their own system.