About Replacement Path, Text Variables & Cusomer Exit?

Question

Hi
Please explain along with examples youwhen we use Replacement Path
                                               Text Variables and
                                               Customer Exit
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Edited by: Pravender on Apr 18, 2011 3:48 PM

Answer 1

Hi,
1. Customer EXIT :
Business Scenario:
The business department wants to check if the orders from the customers for a  certain week (e.g. 6 weeks from now) are already transmitted into their system. Therefore they run a report with a variable, that is calculated automatically.
Note: Of course this is not the only suitable solution, but it will show you how the exit works.
Step by Step Solution:
A.You should create a variable on the info object 0CALWEEK like this:
 1.Technical Name: WS_FWEEK
2.Description: Workshop Future Week
3 Interval
5.Mandatory variable entry
6.Processing: Customer Exit
7.NOT ready for input
B.Call transaction CMOD for the definition of the customer exit.  
C.Create a new project, maintain the short text and assign a development class.  
D.Go to Enhancement Assignments and assign RSR00001. Press the button components to continue.  
E.Double-click on EXIT_SAPLRRS0_001.  
F.For documentation place the cursor an RSR00001 and use the menu GoTo => Display documentation.   
G.Then double-click on ZXRSRU01.  
H. If the include does not exist, you have to create it; assign a development class and a transport request
Enter this code:
INCLUDE ZXRSRU01                                        *
  data: l_idx like sy-tabix,
        workdate(8) type d,
        futureweek(6) type c.
  DATA: L_S_RANGE TYPE RSR_S_RAGESID.
case I_vnam.
when u2018WS_FWEEKu2019.
if i_step = 2          u201C after pop-up
Calculate Current day plus 6 weeks:
  workdate = sy-datum  + 42 .
Calculate the week of this day
  CALL FUNCTION 'DATE_GET_WEEK'
    EXPORTING
      DATE               = workdate
    IMPORTING
     WEEK               = futureweek
EXCEPTIONS
  DATE_INVALID       = 1
  OTHERS             = 2
  IF SY-SUBRC <> 0.
MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
        WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
  ENDIF.
  l_s_range-low = futureweek.
l_s_range-high =
  l_s_range-sign = 'I'.
  l_s_range-option = 'EQ'.
  append l_s_range to l_t_range.
  p_subrc = 0.
ENDIF.
ENDCASE.
I.Save and activate the codie 
J.Activate the project. (Very important!)
K. Define a query using the above created variable.
L.For displaying the variable values in the executed query you also may define two text variables. These should, if necessary, be able to show the lower and the upper value calculated by the customer exit.
2 Replacement Path :
Example for filling variable values depending on an other variable /
Deriving one variable value from another variable
Business scenario.
A query should show in one column the value for one period. The period should be entered by the user. In the second column the accumulated vale from the beginning of the year to the period of the first column should be displayed. The InfoCube contains only the InfoObject 0CALMONTH (Month/Year) and not single InfoObjects for period and year.
Solution:
For this scenario we need four variables: two variables for the column text and two variables for the period values. One of these period variables is defined as a variable with a customer exit
Step by Step Solution:
Create an input variable u201CMONTHu201D (you need this specific information for the coding example below). The variable is based on the InfoObject 0CALMONTH. Set the following attributes:
Single Value
Ready for input
Mandatory variable entry 
Create a variable  u201CCUMMONTHu201D (you need this specific information for the coding example below) with a customer exit as a processing type. The variable is based on the InfoObject 0CALMONTH. Set the following attributes:
Interval
NOT ready for input!
Mandatory variable entry
Create two text variables. Both variables use the u201CReplacement Pathu201D as processing type. The first text variable is filled with the text from the u201Cfrom valueu201D. The second is filled with the text from the u201Cto valueu201D.
Enter this code
INCLUDE ZXRSRU01                                        *
DATA: L_S_RANGE TYPE RSR_S_RAGESID.
DATA: LOC_VAR_RANGE LIKE RRRANGEEXIT.
case I_vnam.
when u2018CUMMONTHu2019.
if i_step = 2          u201C after pop-up
LOOP AT I_T_VAR_RANGE INTO LOC_VAR_RANGE
          WHERE VNAM = u2018MONTHu2019.
     CLEAR L_S_RANGE.
l_t_range-low = loc_var_range(4).  u201Cgetting current year
l_t_range-low+4(2) = u201801u2019 u201Csetting 1st period in cur. year
l_t_range-high = loc_var_range-low u201Chigh value=input value
l_t_range-sign = 'I'.
l_t_range-option = 'BT'.
append l_s_range to e_t_range.
exit.
endloop.
endif.
endcase.
Save and activate the code.
Activate the project.
Define a query containing all the variables.
Regards
CSM Reddy