Hi Ravishankar Baranwal,
You could contact our sales department and they will decide( per case)
whether it would be possible to change the license key. By default and according to our agreement you cannot change the license key file once it has been generated.
the Telerik team
Do you want to have your say when we set our development plans?
Do you want to know when a feature you care about is added or when a bug fixed?
Telerik Public Issue Tracking
system and vote to affect the priority of the items