Hi @Bashar1 and welcome to the community.
I'm sorry to hear this. What code is it you are referring to? Is it a screen lock, a SIM lock or another type of lock? Please elaborate with as much detail as possible and the community will try it's best to assist you.
If it is a screen lock you can reset it if you have the activate my Xperia in your device. Simply log on to the My Xperia website and follow the instructions. https://myxperia.sonymobile.com/signin
Let me know how it goes.
