Hi @Jason Nam​ , DLT and unity catalog are not integrated yet. The cluster-notebook setup uses UC and can access S3 but not the DLT jobs. Please check the limitations in this document (7th point):

https://docs.databricks.com/release-notes/unity-catalog/20220825.html#unity-catalog-ga-limitations

We can expect this integration in the upcoming quarters.

Hope this information helps.