Why is the KPI not displaying results and throws an exception - 'java.lang.Exception: Query Execution Failed! : A column has been specified more than once in the order by list. Columns in the order by list must be unique'?

Why is the KPI not displaying results and throws an exception - 'java.lang.Exception: Query Execution Failed! : A column has been specified more than once in the order by list. Columns in the order by list must be unique'?

In case of a crosstab KPI, the KPI fails to execute when the crosstab ORDER BY clause contains two columns. Therefore the columns in the ORDER BY must be unique. Also, please note that the measure ORDER BY should be specified as “None” as it will not get applied for the crosstab KPI’s.