Cloudfare ns not allowed with tld .it

I tried test functionality of NS for my domain but I received the following error :

In zone : NSCompareTest

"It verifies the correspondence between the nameservers listed in the registration request or in the hosts change request with those inserted in the NS records of the zone file

Nameserver Details Test Status

Nameservers list [,] different from NS Records: [,] FAILED

Anybody knows how to correct this issue?
Thanks in advance

Checking in the following website :

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