Why do we use process keys

Dear all,
Can any one tell me y we use process keys....in inventory........can anyone please tell me the importance of process keys... y do we use them in the update rules.
what is the significance of process keys
Regards
venu

Dear,
For this we need to understand how Business Contents/extractors are designed.
Well, based on applications there are different methods followed by SAP to differentiate different Business Events in Logistics Applications.
Say for example, for Logistics applications Process Keys are used to differentiate between different Business Events.
In Financials, we use 'Value Type' to differentiate whether the data is a planned data or a Actual data or budgeted or a commitment or forecast etc.
Since, logistics applications are Business Events oriented, documents are differentiated using Process Keys.
Thanks

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Hi,
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Hi,
Why should we select all key fields in our select query when using for all entries statement?
I read about for all entries but this point was not clear in any post.
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Dear Subhasini,
It is because FOR ALL ENTRIES deletes the duplicate entries before populating the target internal table.
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please give a basic idea about BRFplus process id and if possible suggest any link.
Thank you in advance.

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Hi,
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Regarding Process Key

Hi all:
Friends I have struck up with my work due to Process key.
I need ur input for the following doubts.
1.What is process key?why we go for this?
2.What is the use of process key values like 1,2,21,22 ?..
Waiting for your reply....
Thanks in advance...
Rgds,
M.surendhar

Hi Surendhar
Please refer to following thread for Inventory process keys
Re: Customer Group in 2LIS_12_VCITM incorrect
Please refer to following thread for process keys used in MM
Re: What are process KEYS in MM
Hope this helps
Regards
Pradip

Why do we use Feild Symbols

Hi All
Breifly explain me why do we use field symbols. and how to use them and where to use them.
Thanks! in advance

Hi,
The new style of definition of internal tables usually doesn't include a header area for the internal table. Furthermore, ABAP Objects will not allow internal tables with header lines. For added performance, instead of declaring a work area--use a field symbol. The work area concept and header line format both require data to be moved from the internal table to the work area or header area. A field symbol is just a pointer that will point to the proper line of the itab. With field symbols, no data needs to be moved. The field symbol just stores the proper memory address to point at the right line. The field symbol can have structure and be made up of fields similar to a work area or header line. Because no data needs to be copied, processing is much faster.
The keys to the usage are:
1) Defining the table records and the field symbol in a similar type.
just an ordinary standard table
TYPES: BEGIN OF it_vbak_line,
vbeln LIKE vbak-vbeln,
vkorg LIKE vbak-vkorg,
vtweg LIKE vbak-vtweg,
spart LIKE vbak-spart,
kunnr LIKE vbak-kunnr,
END OF it_vbak_line.
DATA: it_vbak TYPE TABLE OF it_vbak_line.
FIELD-SYMBOLS: <it_vbak_line> TYPE it_vbak_line.
or as a screaming fast hash table for keyed reads
TYPES: BEGIN OF it_vbpa_line,
vbeln LIKE vbak-vbeln,
kunnr LIKE vbak-kunnr,
END OF it_vbpa_line.
DATA: it_vbpa TYPE HASHED TABLE OF it_vbpa_line
WITH UNIQUE KEY vbeln.
FIELD-SYMBOLS: <it_vbpa_line> TYPE it_vbpa_line.
2) In ITAB processing, utilize the ASSIGNING command.
loop example
LOOP AT it_vbak ASSIGNING <it_vbak_line>.
look at records--populate it_zpartner
read example
READ TABLE it_vbpa ASSIGNING <it_vbpa_line>
WITH TABLE KEY vbeln = <it_vbak_line>-vbeln.
3) Refer to the field symbol's fields in the loop or after the read.
wa_zpartner-vkorg = <it_vbak_line>-vkorg.
wa_zpartner-vtweg = <it_vbak_line>-vtweg.
wa_zpartner-spart = <it_vbak_line>-spart.
wa_zpartner-kunag = <it_vbak_line>-kunnr.
wa_zpartner-kunwe = <it_vbpa_line>-kunnr.
See the code example below for further detail. The code was written in R/3 4.6C and should work for all 4.x versions.
Code
REPORT z_cnv_zshipto_from_hist          NO STANDARD PAGE HEADING
                                        LINE-SIZE 132
                                        LINE-COUNT 65
                                        MESSAGE-ID z1.
Program Name: ZSHIPTO from History             Creation: 07/23/2003 *
SAP Name    : Z_CNV_ZSHIPTO_FROM_HIST           Application: SD      *
Author      : James Vander Heyden               Type: 1              *
Description : This program reads tables VBAK & VBPA and populates   *
ZPARTNER. ZPARTNER table is read in by ZINTSC06. ZINTSC06 updates    *
the ZSHIPTO relationships.                                           *
Inputs: Selection Screen                                            *
Outputs:                                                             *
External Routines                                                    *
Function Modules:                                                  *
Transactions    :                                                  *
Programs        :                                                  *
Return Codes:                                                        *
Ammendments:                                                         *
   Programmer        Date     Req. #            Action               *
================ ========== ====== ===============================*
J Vander Heyden   07/23/2003 PCR     Initial Build                  *
DATA DICTIONARY TABLES                                               *
TABLES:
zpartner.
SELECTION SCREEN LAYOUT                                              *
PARAMETERS: p_load   RADIOBUTTON GROUP a1 DEFAULT 'X',
            p_deltab RADIOBUTTON GROUP a1.
SELECTION-SCREEN SKIP 2.
SELECT-OPTIONS: s_vkorg FOR zpartner-vkorg MEMORY ID vko OBLIGATORY
                             NO INTERVALS NO-EXTENSION,
                s_vtweg FOR zpartner-vtweg MEMORY ID vtw OBLIGATORY
                             NO INTERVALS NO-EXTENSION,
                s_spart FOR zpartner-spart MEMORY ID spa OBLIGATORY
                             NO INTERVALS NO-EXTENSION.
INTERNAL TABLES                                                      *
TYPES: BEGIN OF it_vbak_line,
        vbeln LIKE vbak-vbeln,
        vkorg LIKE vbak-vkorg,
        vtweg LIKE vbak-vtweg,
        spart LIKE vbak-spart,
        kunnr LIKE vbak-kunnr,
      END OF it_vbak_line.
DATA: it_vbak TYPE TABLE OF it_vbak_line.
FIELD-SYMBOLS: <it_vbak_line> TYPE it_vbak_line.
TYPES: BEGIN OF it_vbpa_line,
        vbeln LIKE vbak-vbeln,
        kunnr LIKE vbak-kunnr,
      END OF it_vbpa_line.
DATA: it_vbpa TYPE HASHED TABLE OF it_vbpa_line
                   WITH UNIQUE KEY vbeln.
FIELD-SYMBOLS: <it_vbpa_line> TYPE it_vbpa_line.
DATA: it_zpartner TYPE TABLE OF zpartner.
DATA: wa_zpartner TYPE zpartner.
STRUCTURES                                                           *
VARIABLES                                                            *
DATA: z_mode   VALUE 'N',
       z_commit TYPE i,
       z_good   TYPE i,
       z_bad    TYPE i.
CONSTANTS                                                            *
SELECTION-SCREEN HELP                                                *
INITIALIZATION                                                       *
INITIALIZATION.
AT LINE SELECTION                                                    *
AT LINE-SELECTION.
AT SELECTION SCREEN                                                  *
AT SELECTION-SCREEN.
START-OF-SELECTION                                                   *
START-OF-SELECTION.
IF p_load = 'X'.
    PERFORM select_records.
    PERFORM process_itab.
ELSE.
    PERFORM delete_table.
ENDIF.
END-OF-SELECTION                                                     *
END-OF-SELECTION.
*&      Form DELETE_TABLE
      text
FORM delete_table.
DATA: w_answer.
CLEAR: w_answer.
CALL FUNCTION 'POPUP_TO_CONFIRM'
       EXPORTING
            titlebar              = text-002
        DIAGNOSE_OBJECT       = ' '
            text_question         = text-003
            text_button_1         = text-004
            icon_button_1         = 'ICON_OKAY'
            text_button_2         = text-005
            icon_button_2         = 'ICON_CANCEL'
            default_button        = '2'
            display_cancel_button = ''
        USERDEFINED_F1_HELP   = ' '
        START_COLUMN          = 25
        START_ROW             = 6
        POPUP_TYPE            =
      IMPORTING
           answer                = w_answer.
   TABLES
        PARAMETER             =
   EXCEPTIONS
        TEXT_NOT_FOUND        = 1
        OTHERS                = 2
IF w_answer = 1.
    DELETE FROM zpartner
   WHERE vkorg IN s_vkorg
     AND vtweg IN s_vtweg
     AND spart IN s_spart.
    MESSAGE i398(00) WITH 'Records deleted from table: '
                          sy-dbcnt
ENDIF.
ENDFORM.                    " DELETE_TABLE
*&      Form SELECT_RECORDS
      text
FORM select_records.
get vbaks
CLEAR: it_vbak.
SELECT vbeln vkorg vtweg spart kunnr
    FROM vbak
    INTO CORRESPONDING FIELDS OF TABLE it_vbak
   WHERE vkorg IN s_vkorg
     AND vtweg IN s_vtweg
     AND spart IN s_spart
     AND auart = 'TA'.
get vbpa we's
CLEAR: it_vbpa.
SELECT *
    FROM vbpa
    INTO CORRESPONDING FIELDS OF TABLE it_vbpa
    FOR ALL ENTRIES IN it_vbak
   WHERE vbeln = it_vbak-vbeln
     AND posnr = '000000'
     AND parvw = 'WE'.
ENDFORM.                    " SELECT_RECORDS
*&      Form PROCESS_ITAB
attempt post goods issue for all entries.
FORM process_itab.
LOOP AT it_vbak ASSIGNING <it_vbak_line>.
look at records--populate it_zpartner
    READ TABLE it_vbpa ASSIGNING <it_vbpa_line>
                WITH TABLE KEY vbeln   = <it_vbak_line>-vbeln.
    IF sy-subrc = 0.
      CLEAR: wa_zpartner.
      wa_zpartner-mandt = sy-mandt.
      wa_zpartner-vkorg = <it_vbak_line>-vkorg.
      wa_zpartner-vtweg = <it_vbak_line>-vtweg.
      wa_zpartner-spart = <it_vbak_line>-spart.
      wa_zpartner-kunag = <it_vbak_line>-kunnr.
      wa_zpartner-kunwe = <it_vbpa_line>-kunnr.
      APPEND wa_zpartner TO it_zpartner.
    ENDIF.
ENDLOOP.
SORT it_zpartner BY mandt vkorg vtweg spart kunag kunwe..
DELETE ADJACENT DUPLICATES FROM it_zpartner.
do a mass table update.
INSERT zpartner FROM TABLE it_zpartner.
IF sy-subrc = 0.
    MESSAGE s398(00) WITH 'Inserted records: ' sy-dbcnt.
ENDIF.
ENDFORM.                    " PROCESS_ITAB
reward if helpful,
kushagra

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Why do we use process keys

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