R80.20 : Policy verification failed

[AdaCoul]

Hi Everyone,

I have some errors when installing policy on my Gateway.

Errors :

Layer 'fratmat_opt': Rule 3 Hides rule 4 for Services & Applications: smtp.

Rule 3 Hides rule 5 for Services & Applications: https ,http.

Rule 3 Hides rule 6 for Services & Applications: telnet ,icmp-proto .

Rule 3 Hides rule 8 for Services & Applications: TCP_25897 ,TCP_7865

Policy verification failed.

How to solve this issue ? Need assistance please !!!

Thanks,

Adam