Reporting on Product Category

Question

Hi,
I have the following requirement and need inputs what would be best way to do it.
I am extracting CRM data(Activities, Opportunities) at a certain Product category level (0CRM_PRHIER), where as data coming from R/3 (Sales) comes at material level (0MATERIAL). 0MATERIAL has PRODH1,PRODH2...PRODH10 as navigational attributes. CRM data created at certain product category level should have one of PRODH1, PRODH2 to PRODH10 values. In the final report end user wants to use Prod category level  and calmonth as variables in the selection, in order to show the result data how can I map sales data with that of CRM data or is there any effective way to do it (May be at reporting).
Data from CRM will be as follows:
Opportunity     Calmonth      Prod.Category     Value
1001               01/2008        P101                   1000
1002               01/2008        P10                     1250
Activity           Calmonth       Prod Category     Number
1234               01/2008         P101                    1
2345               01/2008         Q101113               3
R/3 data as follows:
Material        P1    P2   P3    P4      P5       P6           P7             P8  P9  P10  Calmonth   Qty     Value
Q1234          P      P1   P10  P101  P1011  P10111    P1011112                       01/2008     100      5
Q2345         Q      Q1   P10  P101 P1011   P10111    Q101113                        01/2008    150      10
Q3456         R      R1   P10  R101  R1021  R10231    Q101113                        01/2008      50       20
When user inputs 01/2008 and P101 as selection ,report should show following
P101     01/2008     1000     1    2000
When user inputs 01/208 and Q101113 as selection,report should show following
Q101113   01/2008   0        3    2500
When user inputs 01/2008 and P10 as selection, report should show following
P10    01/2008      0          0     3000
Many thanks for your inputs.
SAM

Answer 1

I would like to know how we can report using product category only in the selection to achive the results. You can advise me if there are any better procedure to consolidate data in the data modeling or may be at the reporting.
Please note when user inputs a particular product category, we should search for all the relevant materials product category belongs to for the sales data and sum up all the key figure information and show in the report. Important point here is how we consolidate data coming from CRM which has product category information with that R/3 data where we have material info which has product category (PH1 to PH10) as attributes.