Firstly I created 2 DC (One is DC-192.168.160.2 and One is ADC-192.168.160.6) like abc.com, when i created it, the dns server was also installed with zone abc.com which i configured forest wide replication, now i want to create the new Domain Tree(Test.com-192.168.160.19) in the existing forest abc.com but when i create it says "number of dns server registered as authoritative dns server for this domain could not be determined, dns server failure" and when i click on Next then says "A delegation for this DNS server cannot be created because the authoritative parent zone cannot be found or it does not run Windows DNS server. If you are integrating with an existing DNS infrastructure, you should manually create a delegation to this DNS server in the parent zone to ensure reliable name resolution from outside the domain “test.com”. Otherwise, no action is required.
Please help me on this issue what steps i have to do.
Thanks