Displaying ALV Grid in Background Job

Many a times there is a requirement to display ALV Grid (not ALV List) in the background Job. I have checked the SDN Forum for the same and it has been mentioned that ALV Grid cannot be displayed in Background, but the list output of ALV is possible. So user won’t have the actual Grid interface but the List interface.

There is a workaround to display ALV Grid in Background Job. The only restriction is you can’t schedule the job through SM36. You need to execute the transaction of the report program, fill in the selection screen data and hit Execute.

The job would be executed in background. User will be able to see the Job Log and Job Status after executing the program. User doesn’t have to go to SM37 to view the job status/log. Once the Job Status is changed to “COMPLETED”, user can click on “DISPLAY SPOOL” to view the ALV Grid.

Limitations:

1. Can’t schedulea background job
2. The session should be active until the background job is completed. If the session is closed, then user won’t be able to check the output in ALV Grid. User would be able to check the output through spool or SM37

Advantages:

1. If the spool width is greater than 255 characters, then the entire width could be seen in the output because the output is directed to an ALV Grid and not to spool
2. Interface of ALV Grid is available instead of ALV List even though it’s a background job.
3. Program won’t give the TIME OUT error

Steps Required:

• 1. Once you execute the program, the following screen would be displayed

• 2. Click “Display Job Status” to check the Status of the Background Job

• 3. Click on “Display the Job Log” to check the Log

• 4. Click on “Display Job Status” to check the Job Status

• 5. Click on “DISPLAY SPOOL” to check the spool content once the Job Status is changed to “COMPLETED”. Output is displayed in ALV Grid

Programs:

1.  Two different programs needs to be created

ZPROGRAM_ONE: This is the 1st program, where the selection screen and all the data validations would be done. Error handling for invalid data should be done in this program.

Once the data validation is done, this program would call the 2nd program ZPROGEAM_TWO. Build the logic to display ALV Grid in this program. The logic will only display ALV in foreground and it won’t be reflected in the spool.

ZPROGRAM_TWO: This program would fetch all the data and do all the processing. If you want the spool output along with ALV Grid output, then build the logic in this program to display ALV Grid.

*&———————————————————————**& Report  ZPROGRAM_ONE                                                **&                                                                     **&———————————————————————**&                                                                     **&                                                                     **&———————————————————————*REPORT  zprogram_one                            .* PRASHANT PATIL TABLES : mara,         tsp01.type-pools:slis.TYPES : BEGIN OF t_mara,          matnr   TYPE mara-matnr,          ersda   TYPE mara-ersda,          ernam   TYPE mara-ernam,          laeda   TYPE mara-laeda,        END OF t_mara.DATA : i_mara       TYPE STANDARD TABLE OF t_mara,       wa_mara      TYPE t_mara,       wa_index     TYPE indx,        ” For Index details       wa_index_key TYPE indx-srtfd VALUE ‘PRG_ONE’,       i_jobsteplist     TYPE STANDARD TABLE OF tbtcstep, ” For spool number       wa_params         TYPE pri_params,  ” To Get Print Parameters       wa_jobhead        TYPE tbtcjob,     ” To know the status of job       wa_jobsteplist    TYPE tbtcstep,    ” To know the spool       w_jobname         TYPE tbtco-jobname,  ” Job name for bckgrnd job       w_jobcount        TYPE tbtco-jobcount, ” Unique id for bckgrd job       w_path            TYPE string,         ” Upload path       w_lsind           TYPE sy-lsind,       ” Index       wa_seltab         TYPE rsparams,       i_seltab          TYPE STANDARD TABLE OF rsparams,       wa_index1         TYPE indx,        ” For Index details       wa_index_key1     TYPE indx-srtfd VALUE ‘PRG_TWO’,       i_fieldcat        TYPE slis_t_fieldcat_alv,       wa_fieldcat       LIKE LINE OF i_fieldcat.*———————————————————————-**         CONSTANTS DECLARATION                                        **———————————————————————-*CONSTANTS :         c_a(1) TYPE c VALUE ‘A’,         c_m(1) TYPE c VALUE ‘M’,         c_l(1) TYPE c VALUE ‘L’,         c_c(1) TYPE c VALUE ‘C’,         c_zfdr(4) TYPE c VALUE ‘ZFDR’,         c_x(1)    TYPE c VALUE ‘X’,         c_locl(4) TYPE c VALUE ‘LOCL’, ” Destination is LOCAL         c_f(1)    TYPE c VALUE ‘F’,   ” Job Status – Failed         c_s(1)    TYPE c VALUE ‘S’,         c_p(1)    TYPE c VALUE ‘P’.*—————————-* SELECTION SCREEN PARAMETERS*—————————-SELECT-OPTIONS : s_matnr FOR mara-matnr.START-OF-SELECTION.*——————————————————-* Before the export, fill the data fields before CLUSTR*——————————————————-  wa_index-aedat = sy-datum.  wa_index-usera = sy-uname.  EXPORT s_matnr       TO DATABASE indx(st) FROM wa_index ID wa_index_key.*———————————————–* To Open the Job for background processing*———————————————–  PERFORM open_job.*———————————————–* To get the print parameters*———————————————–  PERFORM get_print_parameters.*——————————* Submit the job in background*——————————  PERFORM job_submit.*—————————* Close the background job*—————————  PERFORM job_close.********************************************************************  This is the output screen with the buttons ************************************************************************ Create 3 buttons DISPLAY SPOOL, STATUS, JOBLOG  SET PF-STATUS ‘ZS001’.  WRITE: / ‘The program is submitted in Background’.  WRITE: / ‘Press DISPLAY SPOOL to see the spool’.  WRITE: / ‘Press STATUS to see the status of the background’.AT USER-COMMAND.*————————————-* If user presses the ‘BACK’ button*————————————-  IF sy-ucomm = ‘BAK’.    IF  wa_jobhead-status = c_f OR        wa_jobhead-status = c_a.      LEAVE TO SCREEN 0.    ENDIF.  ENDIF.*————————————————-* If the user presses the ‘DISPLAY SPOOL’ Button*————————————————-  IF sy-ucomm = ‘DISPLAY’.    PERFORM display_spool.  ENDIF.*———————————————–* If the user presses the ‘JOB STATUS’ Button*———————————————–  IF sy-ucomm = ‘STATUS’.    PERFORM display_status.  ENDIF.*———————————————-* If the user presses the ‘JOB LOG’ Button*———————————————-  IF sy-ucomm = ‘JOBLOG’.    PERFORM display_job_log.  ENDIF.*&———————————————————————**&      Form  open_job*&———————————————————————**       text*———————————————————————-**  –>  p1        text*  <–  p2        text*———————————————————————-*FORM open_job .*———————————————————————–* This is to Create a new job which is to be submitted in background to* process sales order/delivery/invoice* Here we would get a unique id ( Jobcount ) which identifies our job* along with the job name which we have assigned to our job*———————————————————————–  CONCATENATE sy-uname              sy-datum              sy-uzeit                      INTO w_jobname .  ” Assign unique jobname  CALL FUNCTION ‘JOB_OPEN’   EXPORTING*   DELANFREP              = ‘ ‘*   JOBGROUP               = ‘ ‘    jobname                = w_jobname*   SDLSTRTDT              = NO_DATE*   SDLSTRTTM              = NO_TIME*   JOBCLASS               =  IMPORTING   jobcount                = w_jobcount* CHANGING*   RET                    = EXCEPTIONS   cant_create_job        = 1   invalid_job_data       = 2   jobname_missing        = 3   OTHERS                 = 4            .  IF sy-subrc <> 0.    MESSAGE ID sy-msgid TYPE sy-msgty NUMBER sy-msgno            WITH sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.  ENDIF.ENDFORM.                    ” open_job*&———————————————————————**&      Form  get_print_parameters*&———————————————————————**       text*———————————————————————-**  –>  p1        text*  <–  p2        text*———————————————————————-*FORM get_print_parameters .  DATA : l_valid TYPE c.*—————————————————————–* This is to get the Print Parameters for the job which is to be* submitted in background to process sales order/delivery/invoice*—————————————————————–  CALL FUNCTION ‘GET_PRINT_PARAMETERS’   EXPORTING*   ARCHIVE_ID                   = C_CHAR_UNKNOWN*   ARCHIVE_INFO                 = C_CHAR_UNKNOWN*   ARCHIVE_MODE                 = C_CHAR_UNKNOWN*   ARCHIVE_TEXT                 = C_CHAR_UNKNOWN*   AR_OBJECT                    = C_CHAR_UNKNOWN*   ARCHIVE_REPORT               = C_CHAR_UNKNOWN*   AUTHORITY                    = C_CHAR_UNKNOWN*   COPIES                       = C_NUM3_UNKNOWN*   COVER_PAGE                   = C_CHAR_UNKNOWN*   DATA_SET                     = C_CHAR_UNKNOWN*   DEPARTMENT                   = C_CHAR_UNKNOWN      destination                  = c_locl ” LOCL*   EXPIRATION                   = C_NUM1_UNKNOWN      immediately                  = space*   IN_ARCHIVE_PARAMETERS        = ‘ ‘*   IN_PARAMETERS                = ‘ ‘*   LAYOUT                       = C_CHAR_UNKNOWN*   LINE_COUNT                   = C_INT_UNKNOWN*   LINE_SIZE                    = C_INT_UNKNOWN*   LIST_NAME                    = C_CHAR_UNKNOWN*   LIST_TEXT                    = C_CHAR_UNKNOWN*   MODE                         = ‘ ‘      new_list_id                  = c_x*   PROTECT_LIST                 = C_CHAR_UNKNOWN      no_dialog                    = c_x*   RECEIVER                     = C_CHAR_UNKNOWN*   RELEASE                      = C_CHAR_UNKNOWN*   REPORT                       = C_CHAR_UNKNOWN*   SAP_COVER_PAGE               = C_CHAR_UNKNOWN*   HOST_COVER_PAGE              = C_CHAR_UNKNOWN*   PRIORITY                     = C_NUM1_UNKNOWN*   SAP_OBJECT                   = C_CHAR_UNKNOWN*   TYPE                         = C_CHAR_UNKNOWN      user                         = sy-uname*   USE_OLD_LAYOUT               = ‘ ‘*   UC_DISPLAY_MODE              = C_CHAR_UNKNOWN*   DRAFT                        = C_CHAR_UNKNOWN*   ABAP_LIST                    = ‘ ‘*   USE_ARCHIVENAME_DEF          = ‘ ‘*   DEFAULT_SPOOL_SIZE           = C_CHAR_UNKNOWN*   PO_FAX_STORE                 = ‘ ‘*   NO_FRAMES                    = C_CHAR_UNKNOWN   IMPORTING*   OUT_ARCHIVE_PARAMETERS       =      out_parameters               = wa_params   valid                        = l_valid   EXCEPTIONS     archive_info_not_found       = 1     invalid_print_params         = 2     invalid_archive_params       = 3     OTHERS                       = 4            .  IF sy-subrc <> 0.    MESSAGE ID sy-msgid TYPE sy-msgty NUMBER sy-msgno            WITH sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.  ENDIF.ENDFORM.                    ” get_print_parameters*&———————————————————————**&      Form  job_submit*&———————————————————————**       text*———————————————————————-**  –>  p1        text*  <–  p2        text*———————————————————————-*FORM job_submit .*———————————————————————–* The job which we have created & the unique id ( jobcount ) which we* have got identifies our job. Hence those parameters are passed along* with the name of the background program “ZPROGRAM_TWO”* The job is submitted in background.*———————————————————————–  CALL FUNCTION ‘JOB_SUBMIT’    EXPORTING*   ARCPARAMS                         =    authcknam                         = sy-uname*   COMMANDNAME                       = ‘ ‘*   OPERATINGSYSTEM                   = ‘ ‘*   EXTPGM_NAME                       = ‘ ‘*   EXTPGM_PARAM                      = ‘ ‘*   EXTPGM_SET_TRACE_ON               = ‘ ‘*   EXTPGM_STDERR_IN_JOBLOG           = ‘X’*   EXTPGM_STDOUT_IN_JOBLOG           = ‘X’*   EXTPGM_SYSTEM                     = ‘ ‘*   EXTPGM_RFCDEST                    = ‘ ‘*   EXTPGM_WAIT_FOR_TERMINATION       = ‘X’    jobcount                          = w_jobcount    jobname                           = w_jobname*   LANGUAGE                          = SY-LANGU    priparams                         = wa_params    report                            = ‘ZPROGRAM_TWO’*   VARIANT                           = ‘ ‘* IMPORTING*   STEP_NUMBER                       =   EXCEPTIONS     bad_priparams                     = 1     bad_xpgflags                      = 2     invalid_jobdata                   = 3     jobname_missing                   = 4     job_notex                         = 5     job_submit_failed                 = 6     lock_failed                       = 7     program_missing                   = 8     prog_abap_and_extpg_set           = 9     OTHERS                            = 10            .  IF sy-subrc <> 0.    MESSAGE ID sy-msgid TYPE sy-msgty NUMBER sy-msgno            WITH sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.  ENDIF.ENDFORM.                    ” job_submit*&———————————————————————**&      Form  job_close*&———————————————————————**       text*———————————————————————-**  –>  p1        text*  <–  p2        text*———————————————————————-*FORM job_close .*—————————————————————–* Once the job is submitted in background then the job is closed*—————————————————————–  CALL FUNCTION ‘JOB_CLOSE’    EXPORTING*   AT_OPMODE                         = ‘ ‘*   AT_OPMODE_PERIODIC                = ‘ ‘*   CALENDAR_ID                       = ‘ ‘*   EVENT_ID                          = ‘ ‘*   EVENT_PARAM                       = ‘ ‘*   EVENT_PERIODIC                    = ‘ ‘    jobcount                          = w_jobcount    jobname                           = w_jobname*   LASTSTRTDT                        = NO_DATE*   LASTSTRTTM                        = NO_TIME*   PRDDAYS                           = 0*   PRDHOURS                          = 0*   PRDMINS                           = 0*   PRDMONTHS                         = 0*   PRDWEEKS                          = 0*   PREDJOB_CHECKSTAT                 = ‘ ‘*   PRED_JOBCOUNT                     = ‘ ‘*   PRED_JOBNAME                      = ‘ ‘*   SDLSTRTDT                         = NO_DATE*   SDLSTRTTM                         = NO_TIME*   STARTDATE_RESTRICTION             = BTC_PROCESS_ALWAYS    strtimmed                         = c_x*   TARGETSYSTEM                      = ‘ ‘*   START_ON_WORKDAY_NOT_BEFORE       = SY-DATUM*   START_ON_WORKDAY_NR               = 0*   WORKDAY_COUNT_DIRECTION           = 0*   RECIPIENT_OBJ                     =*   TARGETSERVER                      = ‘ ‘*   DONT_RELEASE                      = ‘ ‘*   TARGETGROUP                       = ‘ ‘*   DIRECT_START                      =* IMPORTING*   JOB_WAS_RELEASED                  =* CHANGING*   RET                               =   EXCEPTIONS     cant_start_immediate              = 1     invalid_startdate                 = 2     jobname_missing                   = 3     job_close_failed                  = 4     job_nosteps                       = 5     job_notex                         = 6     lock_failed                       = 7     invalid_target                    = 8     OTHERS                            = 9            .  IF sy-subrc <> 0.    MESSAGE ID sy-msgid TYPE sy-msgty NUMBER sy-msgno            WITH sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.  ENDIF.ENDFORM.                    ” job_close*&———————————————————————**&      Form  display_spool*&———————————————————————**       text*———————————————————————-**  –>  p1        text*  <–  p2        text*———————————————————————-*FORM display_spool .*——————————————-* To Read the Job to get the spool details*——————————————-  DATA : l_rqident TYPE tsp01-rqident, ” Spool Number         l_spoolno TYPE tsp01_sp0r-rqid_char.  CLEAR : l_rqident,          w_lsind,          wa_jobsteplist.  REFRESH : i_jobsteplist.  SET PF-STATUS ‘ZAR02’.*——————————–* Get the Spool Number*——————————–  CALL FUNCTION ‘BP_JOB_READ’    EXPORTING      job_read_jobcount           = w_jobcount      job_read_jobname            = w_jobname      job_read_opcode             = ’20’*     JOB_STEP_NUMBER             =   IMPORTING     job_read_jobhead            = wa_jobhead   TABLES     job_read_steplist           = i_jobsteplist* CHANGING*    RET                         =   EXCEPTIONS     invalid_opcode              = 1     job_doesnt_exist            = 2     job_doesnt_have_steps       = 3     OTHERS                      = 4            .  IF sy-subrc <> 0.    MESSAGE ID sy-msgid TYPE sy-msgty NUMBER sy-msgno            WITH sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.  ENDIF.*————————————————* Read the Job Step list to get the spool number*————————————————  READ TABLE i_jobsteplist INTO wa_jobsteplist INDEX 1.  CHECK wa_jobsteplist-listident <> space.*—————–* Spool Number*—————–  l_rqident = wa_jobsteplist-listident.  MOVE l_rqident TO l_spoolno.*—————————* Check the spool in TSP01*—————————  SELECT SINGLE * FROM tsp01 WHERE rqident = l_rqident.  IF  sy-subrc = 0.    LEAVE TO LIST-PROCESSING.    CALL FUNCTION ‘RSPO_R_RDELETE_SPOOLREQ’      EXPORTING        spoolid       = l_spoolno*     IMPORTING*       RC            =*       STATUS        =              .    PERFORM show_alv.  ENDIF.  w_lsind = sy-lsind.  IF sy-lsind GE 19.    sy-lsind = 1.  ENDIF.ENDFORM.                    ” display_spool*&———————————————————————**&      Form  show_alv*&———————————————————————**       text*———————————————————————-**  –>  p1        text*  <–  p2        text*———————————————————————-*FORM show_alv .*———————————————————* Before the import, fill the data fields before CLUSTR.*———————————————————  wa_index1-aedat = sy-datum.  wa_index1-usera = sy-uname.*———————————————————-* To Import the selection screen data from Calling Program*———————————————————-  IMPORT i_mara  FROM DATABASE indx(st) ID wa_index_key1 TO wa_index1.  FREE MEMORY ID wa_index_key1.* This prepares the field-catalog for ALV.  PERFORM prepare_fieldcatalog.* This displays the output in  ALV format .  PERFORM display_alv.ENDFORM.                    ” show_alv*&———————————————————————**&      Form  display_status*&———————————————————————**       text*———————————————————————-**  –>  p1        text*  <–  p2        text*———————————————————————-*FORM display_status .*——————————————————————* To Display the STATUS of the JOB which is exectued in background*——————————————————————  CLEAR : wa_jobsteplist.  REFRESH : i_jobsteplist.  WRITE:/ ‘DISPLAYING JOB STATUS’.  CALL FUNCTION ‘BP_JOB_READ’    EXPORTING      job_read_jobcount           = w_jobcount      job_read_jobname            = w_jobname      job_read_opcode             = ’20’*     JOB_STEP_NUMBER             =   IMPORTING     job_read_jobhead            = wa_jobhead   TABLES     job_read_steplist           = i_jobsteplist* CHANGING*    RET                         =   EXCEPTIONS     invalid_opcode              = 1     job_doesnt_exist            = 2     job_doesnt_have_steps       = 3     OTHERS                      = 4            .  IF sy-subrc <> 0.    MESSAGE ID sy-msgid TYPE sy-msgty NUMBER sy-msgno            WITH sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.  ENDIF.*—————————————————-* To Display the status text as per the status type*—————————————————-  CASE wa_jobhead-status.    WHEN ‘S’. WRITE: / ‘Scheduled’.    WHEN ‘R’. WRITE: / ‘Released’.    WHEN ‘F’. WRITE: / ‘Completed’.    WHEN ‘A’. WRITE: / ‘Cancelled’.    WHEN OTHERS.  ENDCASE.  IF sy-lsind GE 19.    sy-lsind = 1.  ENDIF.ENDFORM.                    ” display_status*&———————————————————————**&      Form  display_job_log*&———————————————————————**       text*———————————————————————-**  –>  p1        text*  <–  p2        text*———————————————————————-*FORM display_job_log .*———————————————–* To display the log of the background program*———————————————–  LEAVE TO LIST-PROCESSING.  CALL FUNCTION ‘BP_JOBLOG_SHOW_SM37B’    EXPORTING      client                    = sy-mandt      jobcount                  = w_jobcount      joblogid                  = ‘ ‘      jobname                   = w_jobname    EXCEPTIONS      error_reading_jobdata     = 1      error_reading_joblog_data = 2      jobcount_missing          = 3      joblog_does_not_exist     = 4      joblog_is_empty           = 5      joblog_show_canceled      = 6      jobname_missing           = 7      job_does_not_exist        = 8      no_joblog_there_yet       = 9      no_show_privilege_given   = 10      OTHERS                    = 11.  IF sy-subrc <> 0.    MESSAGE ID sy-msgid TYPE sy-msgty NUMBER sy-msgno            WITH sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.  ENDIF.ENDFORM.                    ” display_job_log*&———————————————————————**&      Form  prepare_fieldcatalog*&———————————————————————**       text*———————————————————————-**  –>  p1        text*  <–  p2        text*———————————————————————-*FORM prepare_fieldcatalog .  CLEAR wa_fieldcat.  wa_fieldcat-fieldname    = ‘MATNR’.  wa_fieldcat-tabname      = ‘I_MARA’.  wa_fieldcat-reptext_ddic = ‘Material no.’.  wa_fieldcat-outputlen    = ’18’.  APPEND wa_fieldcat TO i_fieldcat.  CLEAR wa_fieldcat.  wa_fieldcat-fieldname    = ‘ERSDA’.  wa_fieldcat-tabname      = ‘I_MARA’.  wa_fieldcat-reptext_ddic = ‘Creation date’.  wa_fieldcat-outputlen    = ’10’.  APPEND  wa_fieldcat TO i_fieldcat.  CLEAR wa_fieldcat.  wa_fieldcat-fieldname    = ‘ERNAM’.  wa_fieldcat-tabname      = ‘I_MARA’.  wa_fieldcat-reptext_ddic = ‘Name of Person’.  wa_fieldcat-outputlen    = ’10’.  APPEND wa_fieldcat TO i_fieldcat.  CLEAR wa_fieldcat.  wa_fieldcat-fieldname    = ‘LAEDA’.  wa_fieldcat-tabname      = ‘I_MARA’.  wa_fieldcat-reptext_ddic = ‘ Last Change’.  wa_fieldcat-outputlen    = ’10’.  APPEND  wa_fieldcat TO i_fieldcat.ENDFORM.                    ” prepare_fieldcatalog*&———————————————————————**&      Form  display_alv*&———————————————————————**       text*———————————————————————-**  –>  p1        text*  <–  p2        text*———————————————————————-*FORM display_alv .* Call ABAP List Viewer (ALV)  call function ‘REUSE_ALV_GRID_DISPLAY’    exporting      it_fieldcat  = i_fieldcat    tables      t_outtab     = i_mara.ENDFORM.                    ” display_alv• ZPROGRAM_TWO: This is the 2nd program which would be called from program ZPROGRAM_ONE.*&———————————————————————**& Report  ZPROGRAM_TWO                                                **&                                                                     **&———————————————————————**&                                                                     **&                                                                     **&———————————————————————*REPORT  zprogram_two                            .* PRASHANT PATILTABLES : mara.TYPE-POOLS:slis.TYPES : BEGIN OF t_mara,          matnr   TYPE mara-matnr,          ersda   TYPE mara-ersda,          ernam   TYPE mara-ernam,          laeda   TYPE mara-laeda,        END OF t_mara.DATA : i_mara        TYPE STANDARD TABLE OF t_mara,       wa_mara       TYPE t_mara,       wa_index      TYPE indx,        ” For Index details       wa_index_key  TYPE indx-srtfd VALUE ‘PRG_ONE’,       wa_index1     TYPE indx,        ” For Index details       wa_index_key1 TYPE indx-srtfd VALUE ‘PRG_TWO’,       i_fieldcat        TYPE slis_t_fieldcat_alv,       wa_fieldcat       LIKE LINE OF i_fieldcat.SELECT-OPTIONS : s_matnr FOR mara-matnr.*———————————————————* Before the import, fill the data fields before CLUSTR.*———————————————————wa_index-aedat = sy-datum.wa_index-usera = sy-uname.*———————————————————-* To Import the selection screen data from Calling Program*———————————————————-IMPORT s_matnrFROM DATABASE indx(st) ID wa_index_key TO wa_index.FREE MEMORY ID wa_index_key.SELECT matnr       ersda       ernam       laeda       FROM mara       INTO TABLE i_mara       WHERE matnr IN s_matnr.PERFORM prepare_fieldcatalog.PERFORM display_alv.*——————————————————-* Before the export, fill the data fields before CLUSTR*——————————————————-wa_index1-aedat = sy-datum.wa_index1-usera = sy-uname.EXPORT i_maraTO DATABASE indx(st) FROM wa_index1 ID wa_index_key1.*&———————————————————————**&      Form  prepare_fieldcatalog*&———————————————————————**       text*———————————————————————-**  –>  p1        text*  <–  p2        text*———————————————————————-*FORM prepare_fieldcatalog .  CLEAR wa_fieldcat.  wa_fieldcat-fieldname    = ‘MATNR’.  wa_fieldcat-tabname      = ‘I_MARA’.  wa_fieldcat-outputlen    = ’18’.  APPEND wa_fieldcat TO i_fieldcat.  CLEAR wa_fieldcat.  wa_fieldcat-fieldname    = ‘ERSDA’.  wa_fieldcat-tabname      = ‘I_MARA’.  wa_fieldcat-outputlen    = ’10’.  APPEND  wa_fieldcat TO i_fieldcat.  CLEAR wa_fieldcat.  wa_fieldcat-fieldname    = ‘ERNAM’.  wa_fieldcat-tabname      = ‘I_MARA’.  wa_fieldcat-outputlen    = ’10’.  APPEND wa_fieldcat TO i_fieldcat.  CLEAR wa_fieldcat.  wa_fieldcat-fieldname    = ‘LAEDA’.  wa_fieldcat-tabname      = ‘I_MARA’.  wa_fieldcat-outputlen    = ’10’.  APPEND  wa_fieldcat TO i_fieldcat.ENDFORM.                    ” prepare_fieldcatalog*&———————————————————————**&      Form  display_alv*&———————————————————————**       text*———————————————————————-**  –>  p1        text*  <–  p2        text*———————————————————————-*FORM display_alv .* Call ABAP List Viewer (ALV)  CALL FUNCTION ‘REUSE_ALV_GRID_DISPLAY’    EXPORTING      it_fieldcat = i_fieldcat    TABLES      t_outtab    = i_mara.ENDFORM.                    ” display_alv