Parameter Required? Value dimension Yes Dimension column in the dataset from which you want to create the measure. measure Yes Name of the output measure. This column name must be unique within the dataset. Do not use the same name as the dimension because the transformation preserves the dimension in the dataset. measureDefault Yes Default value for the measure if the transformation is unable to create a measure from a dimension. measureType Yes Type of measure. Valid value: “long” source Yes Node in the dataflow definition file that contains the dataset to which you want to add the measure.