Hi @Abhishek Dutta , Databricks does not support concurrent merge operation on same table and partition. If you want to run two merge operations concurrently, you can do that by making sure they refer to different partitions of the table. You can read more about it here:https://docs.databricks.com/optimizations/isolation-level.html?_ga=2.79901906.457731583.1676289173-1981769815.1672661856#concurrentappendexception