Crystal Reports Cross tab sum 4 times

Message

     I prepared a cross tab which need to display the item no, description, pur/sales price and the inventory qty.

e.g.
Item    Description    PurPrice   SalesPrice   WarehouseA                
WXYZ  sample item    0.5           3                      20pcs
ABCD  example         1.5           6                      40pcs

For actual inventory qty, WXYZ is 5pcs and ABCD is 10pcs. However, It sums the actual qty 4 times.

Do you guys know how it could be fixed ?

Thank so much!