You can't transfer the pass to another person. You need to check the conditions for the pass if you can get a refund or not. The conditions are shown on the invoice for the pass.

If you bought the pass during the big 50% sale last spring, then the pass is non-refundable. 

It may be possible to do an exchange to another person if you get an agreement with customer service and if your pass is exchangeable. But that would not be possible with a 50% discounted pass.

If your pass is exchangeable, you can always do an exchange, see:

https://www.interrail.eu/en/interrail-passes/ordering-info/refund-exchange-policy

An exchange only has a €15 fee.

Thanks you all. I had %50 discount ticket bought last year during the promotion.
I guess I have to activate it and use, there is no option to refund.

Yes, that is correct.