SAP Message R9E056 - Calculation prior to aggreagation not allowed for &1 '&2'

Diagnosis <(>&<)>V1& '<(>&<)>V2<(>&<)>' uses the setting 'Calculation BeforeAggregation'. This is not allowed with this formula. The setting 'Calculation Before Aggregation' can only be used informulas whose operands all use the same aggregation. System Response The formula cannot be calculated. Procedure Use the setting 'Calculation After Aggregation' instead.