ORA-36389: (XSAGPARTDEP01) Can not aggregate from PARTITION number into PARTITION number due to increasing sparsity along DIMENSION %J.

Cause: The user is attempting to use partitions as a means of sparsity control, however they have set up their partitions in a manner that simply makes no sense. It is a simple fact that during aggregation data becomes more dense, not less dense, and yet their partitions indicate the opposite.

Action: Modify the partition template add the specified dimension into the source composite, or removing it from the target composite.