Radiated emission of power supply

Hello, I am designing one flyback converter from 230V AC to 4.1DC and now this power supply is failing in Radiated emission test done by standard CISPR 22 which part should I focus on which is the main cause of problem?

Hello Abishek,
What is the power supply IC being used in design? what is the frequency its failing at?

Regards,
Nouman