Particular S4 rejected

Hi, univention-s4connector-list-rejected outpt:

UCS rejected

    1:   UCS DN: cn=wsus,cn=computers,dc=domain,dc=intranet
          S4 DN: cn=wsus,cn=computers,DC=domain,DC=intranet
         Filename: /var/lib/univention-connector/s4/1559632941.036545

    2:   UCS DN: cn=wsus,cn=computers,dc=domain,dc=intranet
          S4 DN: cn=wsus,cn=computers,DC=domain,DC=intranet
         Filename: /var/lib/univention-connector/s4/1559723935.413293


S4 rejected

    1:    S4 DN: DC=_kerberos,DC=domain.intranet,CN=MicrosoftDNS,DC=DomainDnsZones,DC=domain,DC=intranet
         UCS DN: <not found>

Can I remove DC=_kerberos,DC=domain.intranet,CN=MicrosoftDNS,DC=DomainDnsZones,DC=domain,DC=intranet, or it’s dangerous?

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