ORA-36176: (XSMXAGGR25) Relation workspace object must be a one-dimensional self-relation to be used as a weight for AGGREGATE
Cause: The user specified an illegal relation as a weight. The relation might have been multidimensional, not a self-relation, or not a relation over one of the bases of the aggregation variable
Action: Specify a valid self relation over one of the bases of the aggregation variable
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