Hello ,I have two datasets sales and budget , in Budget dataset i have added a calculated field Turnover_Budget_Percentage as:=IIF(Fields!Budget_Y.Value<>0,((First(Fields!Sales_Y.Value,"Sales")-Fields!Turnover_YTD_Y.Value)/iff(Fields!Turnover_YTD_Y.Value=0,1,Fields!Turnover_YTD_Y.Value))*100,IIF(Fields!Sales_Y.Value<>0,100,0))then in the tablix i use lookup function as to get the values:=Code.SumLookup(Lookupset(Fields!Item_number.Value,Fields!Item_number.Value,Fields!Turnover_Budget_Percentage.Value,"Budget"))But i get the following error: The expression used for the calculated field 'Turnover_Budget_Percentage' includes an aggregate,runningvalue,rownumber,previous or lookup function.aggregate,runningvalue,rownumber,previous or lookup function cannot be used in the calculated field expressions.So if any one can suggest what changes do i need to do to get the values in the tablix.Thanks,Nish.
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