Hi @avishkarborkar ,

Did you enable UC for your workspace? After you enable UC in your workspace you need to use proper cluster that supports UC. Make sure you have such one.

Enable a workspace for Unity Catalog - Azure Databricks | Microsoft Learn

I have just started the ML associate certification training video, I have manually created a cluster DBR 13.3 LTS MLSpark 3.4.1 Scala 2.12.

Does you cluster have following option? 

There could be multiple reasone why you're getting this error @avishkarborkar . If the course you're following requires Unity Catalog, first you need to check if you have a premium workspace. Next you need to make sure that your workspace is enabled for Unity Catalog (you need to assign it to a regional metastore in account console).
Enable a workspace for Unity Catalog - Azure Databricks | Microsoft Learn
Then, you need to have a proper cluster which supports Unity Catalog.

For further troubleshooting ideas you can refer to below article:

Workspace is not UC enabled - Databricks

And one last thing, Unity Catalog requires SINGLE_USER or USER_ISOLATION (shared access mode in the UI) access mode of the cluster. Make sure you've chosen a correct settings 🙂

Thanks I will try !