COPA Report Problem

Hi Experts,

I am new at this problem where COPA Report does not show the Amounts posted:

The Existing Report's characteristics:

Plant - key

Material Group - key

Product - key

Customer

Ship-to party

Ext. Matl Group - key

with Selection:

Company Code -1100

Fiscal Year - 2010

Period From - 1

Period To - 12

Currently they are looking at the Ext Matl Group (defined under Material Master), however, there are no values being displayed even they are posted under the selection variants. Are there any prerequisite besides running KE30?