NetBackup policy validation failed
NetBackup policy validation may fail in the following cases:
No host name entry for the virtual machine exists in the DNS server or in the Windows hosts file on the Hyper-V server:
Windows\System32\drivers\etc\hosts
Create a virtual machine name entry in either the DNS server or in the hosts file of the Hyper-V server.
A firewall is enabled and no port entry exists for the master server.
Add a port entry for the NetBackup master server.
See the NetBackup Administrator's Guide.