Hello @Gudiwada Sai Venkata Hemanth Kumar
Thank you for posting the question!
As the device has already been claimed to Azure Sphere Catalog in your previous account, which can't be unclaimed.
Claiming a device is a one-time operation, which we can't undo Claim your device quickstart - Azure Sphere | Microsoft Learn
Unfortunately, we cannot transfer a device from one catalog to another.
Hope this answer helps. Please let us know if you have any questions.