ABAP logic for customer variables

Question

Dear Experts,
I need a code for given screnario.
There are 2 similar cubes under Multiprovider on which report is running.I am not supposed to restrict cube at query level in filters as both cubes are required.Here is an example.
Examples:
1)      The user selects APO Location DE03 in the Variable screen and DE03 has no flag in the masterdata,
 the variable based on Infoprovider does exclude the new Cube STSCAPOR2
2)     The user selects APO Location GR03 in the Variable screen and GR03 has a flag in the masterdata,
 the variable based on Infoprovider does exclude the old Cube STSCAPORM
3)     The user selects 2 different APO Locations DE03 and GR03 in the Variable screen and they are in different cubes (one has got a flag and one is empty)
 the user should get an information that he cannot select/Mix APO Locations from different Planning Areas!
We have a infoobject APO location (/BI0/PAPO_LOCNO) and it has attribute(/BIC/STNEWPLA) which holds a value "1".
Can you please help me with code.
Thanks alot
ACE

Answer 1

to exclude the cubes.
create a variable with customer exit as processing type and filter infoprovider with this variable and select exclude.
and the sample code is given below
DATA: l_s_range TYPE rsr_s_rangesid.
If I_vnam = 'ZVAR_INFOPROVIDER' and I_step = 2.
READ TABLE i_t_var_range INTO WA
WITH KEY vnam = 'apo_location variable name'.
   If i_t_var_range -low = 'DE03'
          l_s_range-low = 'STSCAPOR2'.
   else If i_t_var_range -low = 'GR03'
          l_s_range-low = 'STSCAPORM'
    endif.
    L_S_RANGE-SIGN = 'I'.
    L_S_RANGE-OPT = 'EQ'.
    APPEND L_S_RANGE TO E_T_RANGE.
Endif.