Handle back button in standard tcode .

I am doing a BDC on standard tcode MEMASSPO which displays the 3rd screen directly of the tcode.
Now problem is when I press the BACK button on this screen it takes me to the previous screen of the same tcode.
My requirement is that it should take me to SAP Menu when i click the BACK button.
I am pasting the BDC code below:
START-OF-SELECTION.
PERFORM bdc_dynpro      USING 'SAPMMSDL' '0200'.
PERFORM bdc_field       USING 'BDC_CURSOR'
                                'MASSSCREEN-VARNAME'.
PERFORM bdc_field       USING 'BDC_OKCODE'
                                '=TAB2'.
PERFORM bdc_dynpro      USING 'SAPMMSDL' '0200'.
PERFORM bdc_field       USING 'BDC_CURSOR'
                                'MASSSCREEN-VARNAME'.
PERFORM bdc_field       USING 'BDC_OKCODE'
                                '=FIND'.
PERFORM bdc_dynpro      USING 'SAPLSPO4' '0300'.
PERFORM bdc_field       USING 'BDC_CURSOR'
                                'SVALD-VALUE(01)'.
PERFORM bdc_field       USING 'BDC_OKCODE'
                                '=FURT'.
PERFORM bdc_field       USING 'SVALD-VALUE(01)'
                                'ELIKZ'.
PERFORM bdc_dynpro      USING 'SAPMMSDL' '0200'.
PERFORM bdc_field       USING 'BDC_OKCODE'
                                '=NEXT'.
PERFORM bdc_field       USING 'BDC_CURSOR'
                                'MASSFVIEW-FIELDTEXT(02)'.
PERFORM bdc_field       USING 'MASSFVIEW-CHECKBOX(01)'
                                'X'.
PERFORM bdc_field       USING 'MASSFVIEW-CHECKBOX(02)'
                                'X'.
PERFORM bdc_dynpro      USING 'SAPLMSMT' '0200'.
PERFORM bdc_field       USING 'BDC_CURSOR'
                                'NONEXT'.
PERFORM bdc_field       USING 'BDC_OKCODE'
                                '=OK'.
PERFORM bdc_dynpro      USING 'SAPLMASS_SEL_DIALOG' '0100'.
CALL TRANSACTION 'MEMASSPO' USING bdcdata MODE 'E'.
Please help me.......

Hi,
You can do it by appending (at the end of the BDC data) the exit actions when the screen X (the one you get after the BACK button has been pressed) is reached.
As you run the BDC with mode 'E', it will stop the BDC data when SAP sees that screen X from the BDC data is not the screen currently displayed. Then, if the user displays later the screen X, SAP continues to execute the BDC data from screen X.
This topic is shortly described here: http://wiki.sdn.sap.com/wiki/display/ABAP/BatchInputFAQ#BatchInputFAQ-IsitpossibletosimulateANDSKIPFIRSTSCREENusingBDC%3F
Sandra

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Hi,
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Edited by: NAVIN FERNANDES on Aug 12, 2010 10:02 AM
Edited by: NAVIN FERNANDES on Aug 12, 2010 10:07 AM

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*& Report ZALV
REPORT ZALV.
TABLES: ZCONTACT.
TYPE-POOLS: slis. "slis contains all of the ALV data types.
TYPES: BEGIN OF ty_zcontact.
         INCLUDE STRUCTURE zcontact.
TYPES: icon TYPE char4, "field holding traffic light value- adding a column to internal table to hold the traffic light
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DATA: "fieldcatALOG TYPE slis_t_fieldcat_alv WITH HEADER LINE,
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       wa_zcontact TYPE ty_zcontact,
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       it_fieldcat TYPE slis_t_fieldcat_alv,"declares field catalog table of line type alv
       wa_fieldcat TYPE slis_fieldcat_alv, "declares the work area of the field catalog
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DATA: it_fieldcat1 TYPE slis_t_fieldcat_alv,
       wa_fieldcat1 TYPE slis_fieldcat_alv.
DATA: V_FIELD(30) TYPE C,
V_VALUE(10) TYPE C.
       "izontact TYPE TABLE OF zcontact.
        "i_logo TYPE OT.
       "ls_layout TYPE slis_layout_alv.
**Selection Screen details
*SELECTION-SCREEN BEGIN OF BLOCK B1 WITH FRAME.
*PARAMETERS: variant like disvariant-variant.
*SELECTION-SCREEN END OF BLOCK B1.
SELECT-OPTIONS:
age FOR wa_zcontact-age,
lastnme FOR wa_zcontact-lastname.
**Getting default variant
* AT SELECTION-SCREEN ON age.
*    SELECT SINGLE age FROM zcontact INTO wa_zcontact-age WHERE age = age.
* IF sy-subrc NE 0.
*    MESSAGE:'That age does not exist mate, Please enter another age' TYPE 'E'.
*    ENDIF.
INITIALIZATION.
*gx_variant-report = sy-repid.
*CALL FUNCTION 'REUSE_ALV_VARIANT_DEFAULT_GET'
*EXPORTING
* I_SAVE = G_SAVE
* CHANGING
*    CS_VARIANT = GX_VARIANT
* EXCEPTIONS
*    NOT_FOUND = 2.
*IF SY-SUBRC = 0.
* VARIANT = GX_VARIANT-VARIANT.
* ENDIF.
START-OF-SELECTION.
PERFORM DATA_RETRIEVAL.
PERFORM BUILD_FIELDCATALOG.
PERFORM DISPLAY_ALV_REPORT.
PERFORM top_of_page.
"g_repid = sy-repid.
*Fetch data from the database
FORM DATA_RETRIEVAL.
SELECT * FROM zcontact INTO TABLE it_zcontact WHERE age IN age AND lastname IN lastnme.
"assigning traffic light colour to each row based on a condition
* IF wa_zcontact-age GE 65.
*   wa_zcontact-icon = 1. "Red Traffic Light
*   ELSEIF wa_zcontact-age BETWEEN 40 AND 64.
*     wa_zcontact-icon = 2. "Yellow traffic light
*     ELSE.
*       wa_zcontact-icon = 3." Green traffic light
*       ENDIF.
*       MODIFY it_zcontact FROM wa_zcontact TRANSPORTING icon.
*       CLEAR wa_zcontact.
ENDFORM.
FORM BUILD_FIELDCATALOG.
*Build field catalog
wa_fieldcat-fieldname = 'ID'.
"wa_fieldcat-seltext_m = 'The Contact ID'.
APPEND wa_fieldcat TO it_fieldcat.
CLEAR wa_fieldcat.
wa_fieldcat-fieldname = 'LASTNAME'.
"wa_fieldcat-seltext_m = 'Contact Lastname'.
APPEND wa_fieldcat TO it_fieldcat.
CLEAR wa_fieldcat.
wa_fieldcat-fieldname = 'FIRSTNAME'.
"wa_fieldcat-seltext_m = 'Contact Firstname'.
APPEND wa_fieldcat TO it_fieldcat.
CLEAR wa_fieldcat.
wa_fieldcat-fieldname = 'DOB'.
"wa_fieldcat-seltext_m = 'Date Of Birth'.
APPEND wa_fieldcat TO it_fieldcat.
CLEAR wa_fieldcat.
wa_fieldcat-fieldname = 'TEL'.
"wa_fieldcat-seltext_m = 'Telephone Number'.
APPEND wa_fieldcat TO it_fieldcat.
CLEAR wa_fieldcat.
wa_fieldcat-fieldname = 'ADDRESS'.
"wa_fieldcat-seltext_m = 'The Address'.
APPEND wa_fieldcat TO it_fieldcat.
CLEAR wa_fieldcat.
wa_fieldcat-fieldname = 'OCCUPATION'.
"wa_fieldcat-seltext_m = 'The Occupation'.
APPEND wa_fieldcat TO it_fieldcat.
CLEAR wa_fieldcat.
wa_fieldcat-fieldname = 'WEIGHT'.
"wa_fieldcat-seltext_m = 'WEIGHT'.
APPEND wa_fieldcat TO it_fieldcat.
CLEAR wa_fieldcat.
wa_fieldcat-fieldname = 'AGE'.
"wa_fieldcat-seltext_m = 'AGE OF THE CONTACT'.
wa_fieldcat-do_sum   = 'X'.        "Display column total
APPEND wa_fieldcat TO it_fieldcat.
CLEAR wa_fieldcat.
wa_fieldcat-fieldname = 'SALARY'.
"wa_fieldcat-seltext_m = 'SALARY'.
wa_fieldcat-do_sum   = 'X'.
APPEND wa_fieldcat TO it_fieldcat.
gd_layout-lights_fieldname = 'ICON'.
ENDFORM.
FORM DISPLAY_ALV_REPORT.
gd_repid = sy-repid.
*Pass data and field catalog to ALV function module to display ALV list
   CALL FUNCTION 'REUSE_ALV_GRID_DISPLAY'
     EXPORTING
       it_fieldcat            = it_fieldcat
       i_callback_program     = gd_repid
       i_callback_top_of_page = 'TOP_OF_PAGE'
       i_callback_user_command = 'USER_COMMAND'
       i_structure_name       = 'ZCONTACT'
       i_save                 = 'X'
       is_variant             = g_variant
       is_layout     = gd_layout
TABLES
       t_outtab      = it_zcontact
EXCEPTIONS
       program_error = 1
       OTHERS        = 2.
ENDFORM.
FORM top_of_page.
*ALV Header declarations
   DATA: it_listheader TYPE slis_t_listheader,
         wa_listheader TYPE slis_listheader,
         t_line like wa_listheader-info,
         ld_lines TYPE I,
         ld_linesc(10) TYPE C.
wa_listheader-typ = 'H'.
wa_listheader-info = 'Contact Details'.
APPEND wa_listheader TO it_listheader.
CLEAR wa_listheader.
wa_listheader-typ = 'S'.
wa_listheader-info = sy-repid.
wa_listheader-key = 'Program Name:'.
APPEND wa_listheader TO it_listheader.
CLEAR wa_listheader.
wa_listheader-typ = 'S'.
wa_listheader-info = sy-uname.
wa_listheader-key = 'User Name:'.
APPEND wa_listheader TO it_listheader.
CLEAR wa_listheader.
wa_listheader-typ = 'S'.
wa_listheader-key = 'Run Date :'.
CONCATENATE sy-datum+6(2)
             sy-datum+4(2)
             sy-datum(4)
             INTO wa_listheader-info
             SEPARATED BY '/'.
APPEND wa_listheader TO it_listheader.
CLEAR wa_listheader.
wa_listheader-typ = 'S'.
wa_listheader-key = 'Time :'.
CONCATENATE sy-uzeit(2)
             sy-uzeit+2(2)
             sy-uzeit+4(2)
             INTO wa_listheader-info
             SEPARATED BY ':'.
APPEND wa_listheader TO it_listheader.
CLEAR wa_listheader.
   CALL FUNCTION 'REUSE_ALV_COMMENTARY_WRITE'
     EXPORTING
       it_list_commentary = it_listheader
       i_logo = 'KLOGO'.
ENDFORM. "top_of_page
*& Form sub_user_command
FORM USER_COMMAND USING P_UCOMM TYPE SY-UCOMM
P_SELTAB TYPE SLIS_SELFIELD.
CASE P_UCOMM.
   WHEN '&IC1'.
CASE p_seltab-fieldname.
   WHEN 'ID'.
   READ TABLE it_zcontact INTO wa_zcontact INDEX p_seltab-tabindex.
   PERFORM DATA_RETRIEVAL1.
   PERFORM BUILD_FIELDCATALOG1.
   PERFORM SECOND_GRID.
   ENDCASE.
   ENDCASE.
ENDFORM. "
FORM DATA_RETRIEVAL1.
SELECT * FROM zcontact INTO TABLE it_zcontact WHERE id EQ wa_zcontact-id.
ENDFORM.
FORM BUILD_FIELDCATALOG1.
*Build field catalog
CLEAR: wa_fieldcat, it_fieldcat.
wa_fieldcat-fieldname = 'ID'.
"wa_fieldcat-seltext_m = 'The Contact ID'.
APPEND wa_fieldcat TO it_fieldcat.
CLEAR wa_fieldcat.
wa_fieldcat-fieldname = 'LASTNAME'.
"wa_fieldcat-seltext_m = 'Contact Lastname'.
APPEND wa_fieldcat TO it_fieldcat.
CLEAR wa_fieldcat.
wa_fieldcat-fieldname = 'FIRSTNAME'.
"wa_fieldcat-seltext_m = 'Contact Firstname'.
APPEND wa_fieldcat TO it_fieldcat.
CLEAR wa_fieldcat.
ENDFORM.
FORM SECOND_GRID.
   CALL FUNCTION 'REUSE_ALV_GRID_DISPLAY'
   EXPORTING
     I_CALLBACK_PROGRAM = SY-REPID
     IT_FIELDCAT = IT_FIELDCAT
     i_structure_name       = 'ZCONTACT'
     i_callback_user_command = 'USER_COMMAND'
     TABLES
       T_OUTTAB = IT_ZCONTACT.
   ENDFORM.

Hi Ten Mariga,
                 I wonder why the second select Query is needed at all instead you can use
---> Not Needed
FORM DATA_RETRIEVAL1.
SELECT * FROM zcontact INTO TABLE it_zcontact WHERE id EQ wa_zcontact-id.
ENDFORM.
----> Instead you can do
   READ TABLE it_zcontact INTO wa_zcontact INDEX p_seltab-tabindex.
Append wa_zcontact to Second_table.
And you can use the Second_table to display the second ALV. The second Select Query will affect the performance too.
Cheers,
Krishnakumar B.

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Hi Gurus,
I have created a module pool screen. In that screen I have used some input/output fields(text box) which i have marked mandatory by making the input field as "required" under program tab.
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hi,
use AT EXIT-COMMAND with the module.
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http://oracleanil.blogspot.com/

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