ERROR 404: Requested page not found

Hi Team,
Webmaster tools shows me the 404 not found.I dont know what that mean.Somebody can help me?

Did you add meta code in header? Please send me screenshot where do you see 404?

Hello Viktor
I am facing this problem at the end of registration page, instead of registration complate it shows ERROR 404: undefined page.

How to fix it?

Hello Maaz,

I think will be better if you create a ticket with your problem.

Hello, I have created a ticket.

Thanks Viktor