How do I create a Grand Total Summary based on a Group Summarized Formula In Crystal 10? - crystal-reports

Question

I have the following formula: #Sales_Cost
(Sum({Estimate_Retail_Inventory_Change___Detail.Sales_Ret_Final_Amount}, {Estimate_Retail_Inventory_Change___Detail.Inv ID}) -
(Sum ({Estimate_Retail_Inventory_Change___Detail.Sales_Ret_Final_Amount}, {Estimate_Retail_Inventory_Change___Detail.Inv ID}) *
{#GM%_For_Cost_Sales}))
This produces the following results and I have placed in my GH2 section:
592.77
1038.26
2628.38
3598.62
356.58
I want to total those values for my Report Footer, but I get the error message, "This field cannot be summarized".
How do I do this?

Answer 1

You need to create a manual running total. To do this you will create 3 new formula fields.
The first one goes in the report header to initialize the running total variable.
WhilePrintingRecords;
NumberVar manualTotal :=0;
The second one goes in the group header with your summary formula.
WhilePrintingRecords;
NumberVar manualTotal := manualTotal + {#Sales_Cost};
The third one goes in your report footer to display the calculated value.
WhilePrintingRecords;
NumberVar manualTotal;
manualTotal;;

Answer 2

Assuming {#GM%_For_Cost_Sales} will not vary within each Inv Id value (though it could vary across different values) and that the group for GH2 is on Inv Id, the simplest way to do this would be to change your formula item to:
{Estimate_Retail_Inventory_Change___Detail.Sales_Ret_Final_Amount} *
(1 - {#GM%_For_Cost_Sales})
- and place summed #Sales_Cost fields into both your GH2 group header and report footer sections.