SAP Message BWOM2013 - A totals row (&2) cannot refer to a cost element group ->

Diagnosis
In report row hierarchy &V3&, the report row &V1& references to totalsrow &V2&. Row &V2& is thus a totals row.
However, a totals row is not allowed to link to a cost element group.However, a link is made to a cost element group in row &V2&.
For this reason, row &V2& must not be referenced from row &V1& as atotals row.

Procedure
Use transaction BWOM01 to make corrections in Customizing for thereport row hierarchy &V3&.
In report row &V1&, reference to a different totals row, or make surethat no cost element group or sender/receiver indicator is set in thetotals row &V2&.