Hi Sowndar kumaresan, I want to help you with this question.
Please verify that the resource group you want to use allow V3 app service deployment. If you have older app service versions already running in the resource group you can't create V3 app services.
Additionally please use the -Debug parameter in your powershell command to get more info what's going wrong in the deployment.
Please post the output here (delete secret data before you post it)
I tried your powershell command and in my environment it works. But it was a newly created resource group with no other app service plans inside.