ClickJack Prevention Preventing Fiori Launchpad in iFrame

Hi Experts ,

I am trying to integrate Fiori application into portal 7.4.

I am followed all the steps mentioned in document

Creating SAP Fiori iViews - Portal - SAP Library

But whenever i am trying to preview sap fiori iview it is giving blank screen changed into fiori application color.

I have checked using debugger tool it says that ,

"Clickjack prevention has prevented Fiori Launchpad to load into iFrame"

Please suggest.

Thanks in advance.