SAP Message BWOM2011 - Report row hierarchy header is not unique ->

Symptom A consistent header could not be found while attempting to build reportrow hierarchy &V1& from Customizing defined via transaction BWOM01. A hierarchy must only contain one report row for which the TotalsRow field is not filled. This row is the header row of the report row hierarchy. The report row hierarchy that you defined not only contains row &V2&but at least one other row for which the Totals Row is initial. Error correction Use transaction BWOM01 to make corrections to Customizing for thereport row hierarchy.