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Duplicate Configuration Column Names in Subconfigured Data Models
If two Configuration column names have the same name, the latter column name in the evaluation cycle overwrites the value from the first column. In case analysis, you can use this method to evaluate one subtable or another based on input values. Since only one of the tables is evaluated, each of the options should have the same outputs, and you need to duplicate column names. Only one of the columns is evaluated for any particular set of selections.