Hi @mani_22 , the issue was somewhere hidden in my code. (If I remember correctly, the issue was: I was using an internal library, which created a spark-dataframe "on the fly" using spark.createDataframe([some, data]). That dataframe was not backed by a  table in Unity Catalog . The logic worked fine in Batch-Workflows, but not in a streaming-DLT.) My solution was, to save that dataframe as a table, and load that table.