Hi, @rudrprasad. You have an inactive DNS zone here:
https://app.netlify.com/account/dns/mctechfiji.com
You must delete it and use these instructions instead:
Alternatively, you can activate the inactive DNS zone. Now, the external DNS instructions are simpler and less error prone so I do recommend that workflow above if you are having issues getting DNS configured.
That said, if you want to activate the DNS zone, there is a support guide (with both solutions) here:
If there are questions about either solution, please let us know.