Hi Prasad, Repaka,
Welcome to the Microsoft Q&A Platform! Thank you for asking your question here.
It seems like you're encountering an error message stating that your Azure subscription does not exist.
Thank you for sharing the screenshot and helping us understand. In the screenshot, I can see that you are not using the correct subscription ID.
Try using this command: az account set --subscription "id"
and see if you are able to set the account.
If you have any further queries, do let us know.