Data transfer from EBP to external systems

Hello everyone....am in a tizzy regarding BAPI's and IDOC's.Can someone clear my doubts please??
Interface concept of R/3 is based on two strategies--RFC and IDocs.
1.]When sending(to R/3) Purchase Order via RFC--Does this mean the PO is transferred by/as a BAPI??
2.]And ALE mechanism is used to transfer IDOCs.Doesn't the ALE use RFC destination to distribute documents?Then why isn't IDOC/ALE referred to RFC like a BAPI?
3.]Is this statement correct:loosely coupled applications(MM,SD,PP etc) are tightly integrated because of ALE??Is the integration of various modules due to ALE or a central Database or both??
4.]Can a BAPI be used to communicate with non R/3 systems say send a PO to the vendor?
5.]Where does XI feature in all the above??
Thanks
Priya

Hi Priya,
A lot of questions, but there are not specific to SRM,  General to all SAP Components. Let me try to answer what i can and know.
1. When sending(to R/3) Purchase Order via RFC--Does this mean the PO is transferred by/as a BAPI??
Yes. PO is transferred by/as a BAPI.
2. ALE use RFC destination to distribute documents.  There are two kind of ALE Processes.
a. Synchronous - Use RFCs or BAPIs.
b. Asynchronous - IDocs
Since ALE use RFC destination, it does not mean they use BAPI.
RFC destination is Remote System you want to reach.
What you use to carry the data that you decide is it a IDoc or RFC or BAPI. 
How do you want the response from Remote System that you decide by Synchronous or Asynchronous.
3. Is this statement correct:loosely coupled applications(MM,SD,PP etc) are tightly integrated because of ALE?? 
No
Is the integration of various modules due to ALE or a central Database or both?? They are thru Integration touch points thru program logic in the back. 
4. Can a BAPI be used to communicate with non R/3 systems say send a PO to the vendor.
Yes.
5. Where does XI feature in all the above.
XI is mapper, translator with Business Partner Network(BPN),EAI tool.
One Simple Ex.:
Your PO should turn into Sales Order into Vendor SAP system, then Vendor can do their backend ERP process using that Sales Order. Vendor can send Acknowledgement, Confirmation and Invoice from their system, inturn will be translated into your system on your PO.
XI sit between any systems and works. It uses XML as communication language.
Thanks,
Jay

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            KMEIN(003),      "Condition Unit of Measure
            KSTBM(019),      "Scale
            KBETR_01(016),   "Scale Rate
            DEL_FLAG,        "Delete Flag Indicator
            ERR_MSG(100),    "Error Message
          END OF T_RECORD,
          BEGIN OF T_ERR_RECORD,   "to have error records stored
             LIFNR(010),      "Vendor Number
             EVART(004),      "Agreement Type
             EKORG(004),      "Purchasing Organization
             EKGRP(003),      "Purchasing Group
             WERKS(004),      "Plant
             LGORT(004),      "Storage Location
             KDATB(010),      "Valid start Date
             KDATE(010),      "Valid End Date
             ZTERM(004),      "Payment Terms
             KTWRT(020),      "Target Value
             EPSTP(001),      "Item Category
             EMATN(018),      "Material Number
             KTMNG(017),      "Target Quantity
             NETPR(014),      "Net Price
             PEINH(006),      "Net Price Unit
             BPRME(003),      "Net Price Order Price Unit
             IDNLF(035),      "Vendor Material number
             WEBRE(001),      "GR Based-IV
             MEPRF(001),      "Pricing Date Category
             LTEX1(040),      "Info Text
             DATAB(010),      "Valid From
             DATBI(010),      "Valid To
             KSCHL(004),      "Condition Type
             KBETR(016),      "Condition Rate if scale is not given
             KONWA(005),      "Currency
             KPEIN(005),      "Condition Pricing Unit
             KMEIN(003),      "Condition Unit of Measure
             KSTBM(019),      "Scale
             KBETR_01(016),   "Scale Rate
             DEL_FLAG,        "Delete Flag Indicator
             ERR_MSG(100),    "Error Message
          END OF T_ERR_RECORD,
          BEGIN OF T_LOEKZ,    "To have deletion indicators for materials
              LOEKZ(001),    "Deletion indicator in purchasing document
              EMATN(018),    "Material Number
              WERKS(004),    "Plant
              LGORT(004),    "Storage Location
              BSTYP(001),    "Purchasing document category
          END OF T_LOEKZ,
          BEGIN OF T_MATNR,  " Type definition to store details of materials
               MATNR(018),    "Material Number
          END OF T_MATNR,
          BEGIN OF T_T001,   " Type definition for company codes
              BUKRS(004),    " Company Code
          END OF T_T001,
          BEGIN OF T_ZMVXREF,   "Cross-Reference table type
              D_ALTKN(10),      "Legacy Vendor Number
              D_BUKRS(4),       "Legacy Company Code
              M_ALTKN(10),      "SAP Company Code
          END OF T_ZMVXREF,
          BEGIN OF T_LFA1,    "Master data of vendors
              LIFNR(10),      "Vendor Number
          END OF T_LFA1,
    *  Type Declaration for T024E (Company Codes)
           BEGIN OF T_T024E,
             EKORG   LIKE   T024E-EKORG,     "Purchasing organization
             BUKRS   LIKE   T024E-BUKRS,     "Company Code
           END OF T_T024E,
    *  Type Declaration for t001w (Plant)
           BEGIN OF T_T001W,
             WERKS  LIKE  T001W-WERKS,            "Plant
           END OF T_T001W,
    *  Type Declatation for String Line
           BEGIN OF T_STR1,                                     "#EC NEEDED
             SLINE(6000) TYPE C,
           END OF T_STR1.
    TYPES:  BEGIN OF T_BDCDATA.  "BDC Data
            INCLUDE STRUCTURE BDCDATA.
    TYPES:  END OF T_BDCDATA.
    *       Internal Tables  Declaration                                  *
    DATA:
    *      Internal table to store input file data
           I_RECORD TYPE STANDARD TABLE OF T_RECORD INITIAL SIZE 0,
    *      Internal table to capture errors
           I_ERR_REC TYPE STANDARD TABLE OF T_ERR_RECORD INITIAL SIZE 0,
    *      Internal table to check for deletion indicators
           I_LOEKZ TYPE STANDARD TABLE OF T_LOEKZ INITIAL SIZE 0,
    *      Internal table to check for material numbers
           I_MATNR TYPE STANDARD TABLE OF T_MATNR INITIAL SIZE 0,
    *      Internal table used for storing Cross-Reference data of Vendor
           I_ZMVXREF TYPE STANDARD TABLE OF T_ZMVXREF INITIAL SIZE 0,
    *      Internal table for holding Vendor Numbers from Master table
           I_LFA1 TYPE STANDARD TABLE OF T_LFA1 INITIAL SIZE 0,
    *      Internal table for holding Purchase Org and Company Codes
           I_T024E TYPE STANDARD TABLE OF T_T024E INITIAL SIZE 0,
    *      Internal table for holding Plants
           I_T001W TYPE STANDARD TABLE OF T_T001W INITIAL SIZE 0,
    *      Internal table for storing a list of Company Codes
           I_T001 TYPE STANDARD TABLE OF T_T001 INITIAL SIZE 0,
    *      Internal table used for ALV Reporting
           I_FIELDCAT TYPE SLIS_T_FIELDCAT_ALV,
    *      Internal table used for holding List Header
           I_LISTHEADER TYPE SLIS_T_LISTHEADER,    "EC NEEDED
    *      Internal table to hold ALV Event
           I_ALV_EVENT TYPE SLIS_T_EVENT,
    *      Internal table to hold Sort Info for ALV Report
           I_SORT TYPE SLIS_T_SORTINFO_ALV,
    *      Internal table for BDC Data
           I_BDCDATA TYPE STANDARD TABLE OF T_BDCDATA INITIAL SIZE 0,
    *      Internal table for messages
           I_MESSTAB TYPE TABLE OF BDCMSGCOLL,
    *      Internal table for String line
           I_STR1 TYPE STANDARD TABLE OF T_STR1 INITIAL SIZE 0.
    *       Work Area Declaration                                         *
    DATA:
    *  Work Area to hold data for the Open Contract
          WA_RECORD TYPE T_RECORD,
    *  Work Area to hold previous record data
          WA_RECORDPREV TYPE T_RECORD,
    *  Work Area to hold errors
          WA_ERR_REC TYPE T_ERR_RECORD,
    *  Work Area to hold the Deletion Indicator of materials
          WA_LOEKZ TYPE T_LOEKZ,
    *  Work Area to hold Material numbers of required materials
          WA_MATNR TYPE T_MATNR,      "EC NEEDED
    *  Work Area to hold errors occured while performing BDC
          WA_MESSTAB TYPE BDCMSGCOLL,
    *  Work Area to hold field catalog for ALV Reports
          WA_FIELDCAT TYPE SLIS_FIELDCAT_ALV,
    *  Work Area to hold list header data for ALV reports
          WA_LISTHEADER TYPE SLIS_LISTHEADER,
    *  Work Area to hold ALV Event
          WA_ALV_EVENT LIKE LINE OF I_ALV_EVENT,  "EC NEEDED
    *  Work Area to hold Layout of ALV Report
          WA_LAYOUT TYPE SLIS_LAYOUT_ALV,
    *  Work Area to hold Cross-Reference data of Vendor
          WA_ZMVXREF TYPE T_ZMVXREF,
    *  Work Area to hold Vendor Numbers from Master table
          WA_LFA1 TYPE T_LFA1,    "EC NEEDED
    *  Work Area to hold Purchase Org and Company Codes
          WA_T024E TYPE T_T024E,
    *  Work Area to hold Company Codes
          WA_T001 TYPE T_T001,
    *  Work Area to hold Plants
          WA_T001W TYPE T_T001W,
    *  Work Area to hold Sort Info for ALV Report
          WA_SORT TYPE SLIS_SORTINFO_ALV,
    *  Work Area to hold BDC Data
          WA_BDCDATA TYPE T_BDCDATA,
    *  Work Area for String line
          WA_STR1 TYPE T_STR1.
    *       Variables  Declaration                                        *
    DATA: V_ERRMSG(500),           "To temporarily store the error message
          V_CONV_DATE(10) TYPE C,  "To capture the converted date format
          V_DATE LIKE SY-DATUM,
          V_REPID LIKE SY-REPID,   "holds report id
          V_CROSS_REFERENCE_ERROR TYPE I,  " cross-reference error
          V_INPUTERROR_FLAG VALUE '',      " input error status
          V_FILENAME TYPE STRING,          " File Name
          VEN_FLAG(1),                       " at new status
          MAT_FLAG(1),                      " at new status
          V_IND(2) TYPE N,                 " index of table control
          V_IND2(2) TYPE N,                " index of table control
          V_IND3(2) TYPE N,                " index of table control
          V_EVRTP1(20),
          V_EPSTP1(20),
          V_EMATN1(20),
          V_KTMNG1(20),
          V_NETPR1(20),
          V_PEINH1(20),
          V_BPRME1(20),
          V_TCSELFLAG1(20),
          V_KSCHL2(20),
          V_KBETR2(20),
          V_KONWA2(20),
          V_KPEIN2(20),
          V_KMEIN2(20),
          V_SELKZ2(20),
          V_KBETR3(20),
          V_KSTBM3(20),
          V_LINE TYPE I,
          V_STR TYPE X VALUE '09',
          V_EXIST TYPE C,
          V_EXIST1 TYPE C,
          V_ISDIR TYPE C,
          V_ISDIR1 TYPE C.
    *       Constants  Declaration                                        *
    CONSTANTS: C_TCODE(5) VALUE 'ME31K', "Trx code - Open Contract Creation
               C_TRUE     VALUE 'X',       " Del_Flag indicator
               C_LOEKZ_MARKED VALUE 'X',   "Deletion indicator for material
               C_INPUTERROR_FLAG_YES VALUE 'X',  "Input File Indicator
               C_VEN_ERR1 VALUE 1,    "Error Indicator
               C_16(2)    VALUE '16',
               C_VEN_ERR2 VALUE 2,    "Error Indicator
               C_VEN_ERR3 VALUE 3,    "Error Indicator
               C_VEN_SUCS VALUE 0,    "Success Indicator
               C_SUCCESS  LIKE SY-SUBRC VALUE '0',
               C_STRUE    VALUE 'S',  "Del_flag for SAP Errors
               C_YTRUE    VALUE 'Y',  "Del_flag for Success Records
               C_MSGTYP_E VALUE 'E',  "holds error message type
               C_MSGTYP_S VALUE 'S',  "holds success message type
               C_BSTYP    VALUE 'K',  "Purchasing Document type is Contract
               C_BACKGROUND VALUE 'N', "Background mode
               C_FOREGROUND VALUE 'A', "All Screen mode
               C_ERRORS   VALUE 'E',   "Error screen mode
               C_WK(2)    VALUE 'WK'. "Value Contract
    *        Selection Screen                                             *
    SELECTION-SCREEN BEGIN OF BLOCK B2 WITH FRAME TITLE TEXT-033.
    SELECTION-SCREEN SKIP.
    SELECT-OPTIONS:
    *              Plant
                   S_WERKS FOR T001W-WERKS OBLIGATORY,
    *              Purchase Organization
                   S_EKORG FOR T024E-EKORG OBLIGATORY.
    *              Company Code
    PARAMETER      P_BUKRS LIKE T001-BUKRS OBLIGATORY.
    SELECTION-SCREEN SKIP.
    SELECTION-SCREEN ULINE.
    SELECTION-SCREEN BEGIN OF LINE.
    SELECTION-SCREEN POSITION 3.
    PARAMETER RB_SERVE RADIOBUTTON GROUP RBX DEFAULT 'X' USER-COMMAND U1.
    SELECTION-SCREEN COMMENT 6(19)  TEXT-036.
    SELECTION-SCREEN POSITION 37.
    PARAMETER RB_LOCAL RADIOBUTTON GROUP RBX.
    SELECTION-SCREEN COMMENT 40(13) TEXT-035.
    SELECTION-SCREEN END OF LINE.
    SELECTION-SCREEN SKIP.
    PARAMETERS:
    *    Parameter holding Input File name
              P_FILE LIKE RLGRAP-FILENAME
                     OBLIGATORY
                     LOWER CASE
                     DEFAULT 'C:\'
                     MODIF ID G1,
              P_FILE1 LIKE RLGRAP-FILENAME
                      OBLIGATORY
                      LOWER CASE
                      DEFAULT '/celestica/interface/corp/in/work/'
                      MODIF ID G2,
    *    Parameter specifying Mode of calling the Transaction.
              P_MODE DEFAULT 'N' OBLIGATORY,
    *    Check box used to test the input file.
              P_TEST AS CHECKBOX DEFAULT 'X',
    *    Parameter holding Filename for holding Input File Errors
              P_IPERR LIKE RLGRAP-FILENAME
                      OBLIGATORY
                      LOWER CASE
                      DEFAULT 'C:\'
                      MODIF ID G1,
              P_IPERR1 LIKE RLGRAP-FILENAME
                     OBLIGATORY
                     LOWER CASE
                     DEFAULT '/celestica/interface/corp/in/work/047_Err.txt'
                     MODIF ID G2.
    SELECTION-SCREEN END OF BLOCK B2.
    *        AT Selection Screen  Events                                  *
    *  Loop the screen to activate relative paths
    AT SELECTION-SCREEN OUTPUT.
      LOOP AT SCREEN.
        IF RB_SERVE = C_TRUE AND SCREEN-GROUP1 = 'G1'.
          SCREEN-OUTPUT = 0.
          SCREEN-ACTIVE = 0.
          SCREEN-INPUT = 0.
        ELSEIF RB_LOCAL = C_TRUE AND SCREEN-GROUP1 = 'G2'.
          SCREEN-OUTPUT = 0.
          SCREEN-ACTIVE = 0.
          SCREEN-INPUT = 0.
        ENDIF.
        MODIFY SCREEN.
      ENDLOOP.
    AT SELECTION-SCREEN ON BLOCK B2.
    *  Checking Access Authorization for the user
      CALL FUNCTION 'ZU_DATA_ACCESS_AUTH_CHECK'
           EXPORTING
                ACTVT        = C_16
                P_BUKRS      = P_BUKRS
           TABLES
                S_WERKS      = S_WERKS
                S_EKORG      = S_EKORG
           EXCEPTIONS
                BUKRS_FAILED = 1
                VKORG_FAILED = 2
                VTWEG_FAILED = 3
                EKORG_FAILED = 4
                WERKS_FAILED = 5
                LGNUM_FAILED = 6
                OTHERS       = 7.
      IF SY-SUBRC <> 0.
        MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
                WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
      ENDIF.
    AT SELECTION-SCREEN ON P_BUKRS.
      IF NOT P_BUKRS IS INITIAL.
        SELECT SINGLE BUKRS INTO T001
                            FROM T001
                            WHERE BUKRS EQ P_BUKRS.
        IF SY-SUBRC NE 0.
          MESSAGE I000 WITH TEXT-089.
          STOP.
        ENDIF.
      ENDIF.
    AT SELECTION-SCREEN ON VALUE-REQUEST FOR P_FILE.
    * Search Help to select Input File path.
      PERFORM GET_FILE_NAME USING P_FILE.
    * Check for the existence of the file.
      IF RB_LOCAL EQ C_TRUE.
        CALL FUNCTION 'TMP_GUI_GET_FILE_EXIST'
             EXPORTING
                  FNAME          = P_FILE
             IMPORTING
                  EXIST          = V_EXIST
                  ISDIR          = V_ISDIR
             EXCEPTIONS
                  FILEINFO_ERROR = 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.
        IF V_ISDIR IS INITIAL.
          IF V_EXIST IS INITIAL.
            MESSAGE I000 WITH TEXT-018.
            STOP.
          ENDIF.
        ELSEIF V_ISDIR EQ C_TRUE.
          MESSAGE I000 WITH TEXT-068.
          STOP.
        ENDIF.
      ENDIF.
    AT SELECTION-SCREEN ON VALUE-REQUEST FOR P_IPERR.
    * Search Help to select Input Error File path.
      PERFORM GET_FILE_NAME USING P_IPERR.
    AT SELECTION-SCREEN.
    * Validate Transaction Mode
      IF  P_MODE <> C_BACKGROUND AND
          P_MODE <> C_FOREGROUND AND
          P_MODE <> C_ERRORS.
        MESSAGE I000 WITH TEXT-034.
        STOP.
      ENDIF.
    START-OF-SELECTION.
    * Get the Input File Data
      V_FILENAME = P_FILE.
      PERFORM UPLOAD_FLATFILE_DATA TABLES I_RECORD
                                   USING V_FILENAME.
    * Sorting the data by all fields
      SORT I_RECORD.
    * Ensuring the padding of the empty spaces before the vendor No
      CLEAR WA_RECORD.
      LOOP AT I_RECORD INTO WA_RECORD.
        CALL FUNCTION 'CONVERSION_EXIT_ALPHA_INPUT'
             EXPORTING
                  INPUT  = WA_RECORD-LIFNR
             IMPORTING
                  OUTPUT = WA_RECORD-LIFNR.
        MODIFY I_RECORD FROM WA_RECORD
                        INDEX SY-TABIX
                        TRANSPORTING LIFNR.
        CLEAR WA_RECORD.
      ENDLOOP.
    * Input file validation
      PERFORM VALIDATE_FLATFILE_DATA.
      IF P_TEST = C_TRUE.
        IF I_ERR_REC[] IS INITIAL.
          MESSAGE I000 WITH TEXT-032.
          STOP.
        ELSE.
    *  Display all the error records at the input level.
          PERFORM DISPLAY_INPERR_RECORDS.
    *  Download Error File
          PERFORM DOWNLOAD_ERROR_FILE.
        ENDIF.
      ELSE.
    * Build BDC Data
        PERFORM BUILD_BDC_DATA.
    * Download Error File
        PERFORM DOWNLOAD_ERROR_FILE.
    * Display the status report.
        PERFORM DISPLAY_PROCESSED_RECORDS.
      ENDIF.
    END-OF-SELECTION.
      REFRESH:  I_RECORD,
                I_ERR_REC,
                I_LOEKZ,
                I_MATNR,
                I_ZMVXREF,
                I_LFA1,
                I_T024E,
                I_FIELDCAT,
                I_LISTHEADER,
                I_ALV_EVENT,
                I_SORT,
                I_BDCDATA,
                I_MESSTAB,
                I_STR1.
      FREE: I_RECORD,
            I_ERR_REC,
            I_LOEKZ,
            I_MATNR,
            I_ZMVXREF,
            I_LFA1,
            I_T024E,
            I_FIELDCAT,
            I_LISTHEADER,
            I_ALV_EVENT,
            I_SORT,
            I_BDCDATA,
            I_MESSTAB,
            I_STR1.
    *&      Form  GET_file_name
    *       Fetches the file and path from the presentation system
    *  -->  p1        Path along with the file name
    FORM GET_FILE_NAME USING L_FILE LIKE RLGRAP-FILENAME.
      CALL FUNCTION 'WS_FILENAME_GET'
           EXPORTING
                MASK             = ',*.TXT,*.txt.'
                MODE             = 'O'
                TITLE            = TEXT-011
           IMPORTING
                FILENAME         = L_FILE
           EXCEPTIONS
                INV_WINSYS       = 1
                NO_BATCH         = 2
                SELECTION_CANCEL = 3
                SELECTION_ERROR  = 4
                OTHERS           = 5.
      CASE SY-SUBRC.
        WHEN 1.
          MESSAGE I000 WITH TEXT-084.
          STOP.
        WHEN 2.
          MESSAGE I000 WITH TEXT-085.
          STOP.
        WHEN 3.
          MESSAGE I000 WITH TEXT-086.
          STOP.
        WHEN 4.
          MESSAGE I000 WITH TEXT-087.
          STOP.
      ENDCASE.
    ENDFORM.                    " GET_file_name
    *&      Form  upload_flatfile_data
    *       Uploading data from Flat File
    FORM UPLOAD_FLATFILE_DATA
                          TABLES I_L_RECORD STRUCTURE WA_RECORD
                          USING L_FILENAME TYPE STRING.
      DATA WA_L_RECORD TYPE T_RECORD.
    * Upload the Flat file data
      IF RB_LOCAL EQ C_TRUE. "File is on the Local System
        CALL FUNCTION 'GUI_UPLOAD'
             EXPORTING
                  FILENAME                = L_FILENAME
                  FILETYPE                = 'ASC'
                  HAS_FIELD_SEPARATOR     = 'X'
             TABLES
                  DATA_TAB                = I_L_RECORD
             EXCEPTIONS
                  FILE_OPEN_ERROR         = 1
                  FILE_READ_ERROR         = 2
                  NO_BATCH                = 3
                  GUI_REFUSE_FILETRANSFER = 4
                  INVALID_TYPE            = 5
                  NO_AUTHORITY            = 6
                  UNKNOWN_ERROR           = 7
                  BAD_DATA_FORMAT         = 8
                  HEADER_NOT_ALLOWED      = 9
                  SEPARATOR_NOT_ALLOWED   = 10
                  HEADER_TOO_LONG         = 11
                  UNKNOWN_DP_ERROR        = 12
                  ACCESS_DENIED           = 13
                  DP_OUT_OF_MEMORY        = 14
                  DISK_FULL               = 15
                  DP_TIMEOUT              = 16
                  OTHERS                  = 17.
        CASE SY-SUBRC.
          WHEN 0.
            DESCRIBE TABLE I_L_RECORD LINES V_LINE.
            IF V_LINE EQ 0.
              MESSAGE I000 WITH TEXT-065.
              STOP.
            ENDIF.
          WHEN 1.
            MESSAGE I000 WITH TEXT-068.
            STOP.
          WHEN 2.
            MESSAGE I000 WITH TEXT-069.
            STOP.
          WHEN 3.
            MESSAGE I000 WITH TEXT-070.
            STOP.
          WHEN 4.
            MESSAGE I000 WITH TEXT-071.
            STOP.
          WHEN 5.
            MESSAGE I000 WITH TEXT-072.
            STOP.
          WHEN 6.
            MESSAGE I000 WITH TEXT-073.
            STOP.
          WHEN 7.
            MESSAGE I000 WITH TEXT-074.
            STOP.
          WHEN 8.
            MESSAGE I000 WITH TEXT-075.
            STOP.
          WHEN 9.
            MESSAGE I000 WITH TEXT-076.
            STOP.
          WHEN 10.
            MESSAGE I000 WITH TEXT-077.
            STOP.
          WHEN 11.
            MESSAGE I000 WITH TEXT-078.
            STOP.
          WHEN 12.
            MESSAGE I000 WITH TEXT-079.
            STOP.
          WHEN 13.
            MESSAGE I000 WITH TEXT-080.
            STOP.
          WHEN 14.
            MESSAGE I000 WITH TEXT-081.
            STOP.
          WHEN 15.
            MESSAGE I000 WITH TEXT-082.
            STOP.
          WHEN 16.
            MESSAGE I000 WITH TEXT-083.
            STOP.
        ENDCASE.
        CLEAR V_LINE.
      ELSEIF RB_SERVE EQ C_TRUE. "File is on the Application Server
        P_MODE = C_BACKGROUND.
        OPEN DATASET P_FILE1 FOR INPUT IN TEXT MODE.
        CHECK SY-SUBRC EQ C_SUCCESS.
        CLEAR WA_STR1.
        DO.
          READ DATASET P_FILE1 INTO WA_STR1.
          IF SY-SUBRC <> 0.      " NE SUCCESS.
            EXIT.
          ELSEIF SY-SUBRC EQ C_SUCCESS.
            APPEND WA_STR1 TO I_STR1.
            CLEAR WA_STR1.
          ENDIF.                  " ENDIF on SY-SUBRC 0 Check.
        ENDDO.                    " ENDDO
        DELETE I_STR1 WHERE SLINE EQ ' '.
        DESCRIBE TABLE I_STR1 LINES V_LINE.
        IF V_LINE EQ 0.
          MESSAGE S000 WITH TEXT-065.
          STOP.
        ENDIF.
        LOOP AT I_STR1 INTO WA_STR1.
          CLEAR: WA_L_RECORD.
          SPLIT WA_STR1-SLINE AT V_STR
          INTO WA_L_RECORD-LIFNR
               WA_L_RECORD-EVART
               WA_L_RECORD-EKORG
               WA_L_RECORD-EKGRP
               WA_L_RECORD-WERKS
               WA_L_RECORD-LGORT
               WA_L_RECORD-KDATB
               WA_L_RECORD-KDATE
               WA_L_RECORD-ZTERM
               WA_L_RECORD-KTWRT
               WA_L_RECORD-EPSTP
               WA_L_RECORD-EMATN
               WA_L_RECORD-KTMNG
               WA_L_RECORD-NETPR
               WA_L_RECORD-PEINH
               WA_L_RECORD-BPRME
               WA_L_RECORD-IDNLF
               WA_L_RECORD-WEBRE
               WA_L_RECORD-MEPRF
               WA_L_RECORD-LTEX1
               WA_L_RECORD-DATAB
               WA_L_RECORD-DATBI
               WA_L_RECORD-KSCHL
               WA_L_RECORD-KBETR
               WA_L_RECORD-KONWA
               WA_L_RECORD-KPEIN
               WA_L_RECORD-KMEIN
               WA_L_RECORD-KSTBM
               WA_L_RECORD-KBETR_01
               WA_L_RECORD-DEL_FLAG
               WA_L_RECORD-ERR_MSG.
          APPEND WA_L_RECORD TO I_L_RECORD.
          CLEAR: WA_L_RECORD,
                  WA_STR1.
        ENDLOOP.
        REFRESH I_STR1.
        CLOSE DATASET P_FILE1.
      ENDIF.
    ENDFORM.
    *&      Form  BDC_DYNPRO
    *       Data populated into i_bdcdata table for program
    FORM BDC_DYNPRO USING PROGRAM DYNPRO.
      CLEAR WA_BDCDATA.
      WA_BDCDATA-PROGRAM  = PROGRAM.
      WA_BDCDATA-DYNPRO   = DYNPRO.
      WA_BDCDATA-DYNBEGIN = C_TRUE.
      APPEND WA_BDCDATA TO I_BDCDATA.
    ENDFORM.
    *&      Form  BDC_FIELD
    *       Data populated into i_bdcdata table for fields
    FORM BDC_FIELD USING FNAM FVAL.
      CLEAR WA_BDCDATA.
      WA_BDCDATA-FNAM = FNAM.
      WA_BDCDATA-FVAL = FVAL.
      APPEND WA_BDCDATA TO I_BDCDATA.
    ENDFORM.
    *&      Form  convert_date
    *       Converting the data from the file format to mm/dd/yyyy format
    *      <--P_wa_record_kdatb  Source Date
    *      <--p_l_conv_date      Target Date
    FORM CONVERT_DATE USING L_DATE
                            L_TAR_DATE.
      CONCATENATE L_DATE+0(2)
                  L_DATE+3(2)
                  L_DATE+6(4)
                  INTO L_TAR_DATE.
    ENDFORM.                    " convert_date
    *&      Form  validate_flatfile_data
    *       Validating the input file
    FORM VALIDATE_FLATFILE_DATA.
      DATA: L_TODAY LIKE SY-DATUM,
            L_STARTDATE_C LIKE SY-DATUM,
            L_ENDDATE_C LIKE SY-DATUM,
            L_ENDDATE_C1 LIKE SY-DATUM,
            L_STARTDATE_C1 LIKE SY-DATUM,
            L_STARTDATE(8),
            L_ENDDATE(8).
    * Fetch indicator for all records on the material, plant & storage
    * location combination.
      IF NOT I_RECORD[] IS INITIAL.
        REFRESH I_LOEKZ.
        SELECT EMATN            " Material Number
               WERKS            " Plant
               LGORT            " Storage Location
               BSTYP            " Purchasing Document Category
               LOEKZ            " Deletion indicator
          INTO TABLE I_LOEKZ
          FROM EKPO
          FOR ALL ENTRIES IN I_RECORD
          WHERE EMATN = I_RECORD-EMATN
            AND WERKS = I_RECORD-WERKS
            AND LGORT = I_RECORD-LGORT
            AND BSTYP = C_BSTYP
            AND LOEKZ = C_LOEKZ_MARKED.
        IF SY-SUBRC EQ 0.
          SORT I_LOEKZ BY EMATN WERKS LGORT BSTYP LOEKZ.
        ENDIF.
    * Fetching Plants for all entries in the selection screen
        REFRESH I_T001W.
        SELECT WERKS  "Plant
            INTO TABLE I_T001W
            FROM T001W
            WHERE WERKS IN S_WERKS.
        IF SY-SUBRC EQ 0.
          SORT I_T001W BY WERKS.
        ENDIF.
    * Fetching materials for the plants listed in flat file
        REFRESH I_MATNR.
        SELECT MATNR          " Material Number
          INTO TABLE I_MATNR
          FROM MARC
          FOR ALL ENTRIES IN I_RECORD
          WHERE WERKS = I_RECORD-WERKS.
        IF SY-SUBRC EQ 0.
          SORT I_MATNR BY MATNR.
        ENDIF.
    * Fetching Company Codes for repective Purchase Organizations
        REFRESH I_T024E.
        SELECT EKORG       "  Purchase Organization
               BUKRS       "  Company Code
            INTO TABLE I_T024E
            FROM T024E
            WHERE EKORG IN S_EKORG.
        IF SY-SUBRC EQ 0.
          SORT I_T024E BY EKORG.
        ENDIF.
    * Fetching SAP Data using Legacy Data.
        REFRESH I_ZMVXREF.
        SELECT D_ALTKN
               D_BUKRS
               M_ALTKN
            INTO TABLE I_ZMVXREF
            FROM ZMVXREF
            FOR ALL ENTRIES IN I_RECORD
            WHERE D_ALTKN = I_RECORD-LIFNR.
        IF SY-SUBRC EQ 0.
          SORT I_ZMVXREF BY D_ALTKN D_BUKRS.
        ENDIF.
    * Fetching Vendors from LFA1
        IF NOT I_ZMVXREF[] IS INITIAL.
          REFRESH I_LFA1.
          SELECT LIFNR
             INTO TABLE I_LFA1
             FROM LFA1
             FOR ALL ENTRIES IN I_ZMVXREF
             WHERE LIFNR = I_ZMVXREF-M_ALTKN.
          IF SY-SUBRC EQ 0.
            SORT I_LFA1 BY LIFNR.
          ENDIF.
        ENDIF.
    * Start Validating the flat file
        CLEAR: WA_RECORD,
               WA_T024E,
               WA_ZMVXREF,
               WA_LFA1,
               WA_LOEKZ,
               WA_MATNR.
        LOOP AT I_RECORD INTO WA_RECORD.
          L_TODAY = SY-DATUM.
          L_STARTDATE = WA_RECORD-KDATB.
          L_ENDDATE = WA_RECORD-KDATE.
          IF WA_RECORD-DEL_FLAG IS INITIAL.
            READ TABLE I_T001W INTO WA_T001W
                               WITH KEY WERKS = WA_RECORD-WERKS
                               BINARY SEARCH.
            IF SY-SUBRC EQ 0.
    *   Cross-Reference check performed for the given Vendors
              READ TABLE I_T024E INTO WA_T024E
                                 WITH KEY EKORG = WA_RECORD-EKORG
                                 BINARY SEARCH.
              IF SY-SUBRC NE 0.
                V_CROSS_REFERENCE_ERROR = C_VEN_ERR3.
              ELSE.
                READ TABLE I_ZMVXREF INTO WA_ZMVXREF
                            WITH KEY D_ALTKN = WA_RECORD-LIFNR
                                     D_BUKRS = P_BUKRS
                            BINARY SEARCH.
                IF SY-SUBRC EQ 0.
                  READ TABLE I_LFA1 INTO WA_LFA1
                             WITH KEY LIFNR = WA_ZMVXREF-M_ALTKN
                             BINARY SEARCH.
                  IF SY-SUBRC EQ 0.
                    V_CROSS_REFERENCE_ERROR = C_VEN_SUCS.
                  ELSE.
                    V_CROSS_REFERENCE_ERROR = C_VEN_ERR2.
                  ENDIF.
                ELSE.
                  V_CROSS_REFERENCE_ERROR = C_VEN_ERR1.
                ENDIF.
              ENDIF.
    * Legacy Vendor could not be mapped
              IF V_CROSS_REFERENCE_ERROR EQ C_VEN_ERR1.
            V_INPUTERROR_FLAG = C_INPUTERROR_FLAG_YES. "Inp.file err. occurd
                WA_RECORD-DEL_FLAG = C_TRUE.
                WA_RECORD-ERR_MSG = TEXT-007.
                MODIFY I_RECORD FROM WA_RECORD
                                TRANSPORTING DEL_FLAG
                                             ERR_MSG
                                WHERE LIFNR = WA_RECORD-LIFNR.
    * Legacy Vendor is mapped but the obtained SAP vendor doesn't exist.
              ELSEIF V_CROSS_REFERENCE_ERROR EQ C_VEN_ERR2.
    *           Inp.file err. occurd
                V_INPUTERROR_FLAG = C_INPUTERROR_FLAG_YES.
                WA_RECORD-DEL_FLAG = C_TRUE.
                WA_RECORD-ERR_MSG = TEXT-008.
                MODIFY I_RECORD FROM WA_RECORD
                                TRANSPORTING DEL_FLAG
                                             ERR_MSG
                                WHERE LIFNR = WA_RECORD-LIFNR.
    * Purchase Organization doesn't exist in T024E.
              ELSEIF V_CROSS_REFERENCE_ERROR EQ C_VEN_ERR3.
    *             Inp.file err. occurd
                V_INPUTERROR_FLAG = C_INPUTERROR_FLAG_YES.
                WA_RECORD-DEL_FLAG = C_TRUE.
                WA_RECORD-ERR_MSG = TEXT-014.
                MODIFY I_RECORD FROM WA_RECORD
                                TRANSPORTING DEL_FLAG
                                             ERR_MSG
                                WHERE EKORG = WA_RECORD-EKORG.
    * Vendor is mapped and validated successfully
              ELSEIF V_CROSS_REFERENCE_ERROR EQ C_VEN_SUCS.
    * Checking for the deletion indicator for that record
                CONCATENATE WA_RECORD-KDATB+6(4)
                            WA_RECORD-KDATB+3(2)
                            WA_RECORD-KDATB+0(2)
                            INTO
                            L_STARTDATE.
                MOVE L_STARTDATE TO L_STARTDATE_C.
                CONCATENATE WA_RECORD-KDATB+6(4)
                            WA_RECORD-KDATB+0(2)
                            WA_RECORD-KDATB+3(2)
                            INTO
                            L_STARTDATE_C1.
                CONCATENATE WA_RECORD-KDATE+6(4)
                            WA_RECORD-KDATE+3(2)
                            WA_RECORD-KDATE+0(2)
                            INTO
                            L_ENDDATE.
                MOVE L_ENDDATE TO L_ENDDATE_C.
                CONCATENATE WA_RECORD-KDATE+6(4)
                            WA_RECORD-KDATE+0(2)
                            WA_RECORD-KDATE+3(2)
                            INTO
                            L_ENDDATE_C1.
                READ TABLE I_LOEKZ INTO WA_LOEKZ WITH KEY
                                                 EMATN = WA_RECORD-EMATN
                                                 WERKS = WA_RECORD-WERKS
                                                 LGORT = WA_RECORD-LGORT
                                                 BINARY SEARCH.
                IF SY-SUBRC EQ 0.
    *             Inpfle err.occured
                  V_INPUTERROR_FLAG = C_INPUTERROR_FLAG_YES.
                  WA_RECORD-ERR_MSG = TEXT-003.
                  WA_RECORD-DEL_FLAG = C_TRUE.    "marking the record
                  MODIFY I_RECORD FROM WA_RECORD
                                  TRANSPORTING DEL_FLAG
                                                ERR_MSG
                                  WHERE LIFNR = WA_RECORD-LIFNR
                                    AND EVART = WA_RECORD-EVART
                                    AND EKORG = WA_RECORD-EKORG
                                    AND EKGRP = WA_RECORD-EKGRP
                                    AND WERKS = WA_RECORD-WERKS
                                    AND LGORT = WA_RECORD-LGORT
                                    AND KDATB = WA_RECORD-KDATB
                                    AND KDATE = WA_RECORD-KDATE
                                    AND ZTERM = WA_RECORD-ZTERM
                                    AND KTWRT = WA_RECORD-KTWRT
                                    AND EPSTP = WA_RECORD-EPSTP
                                    AND EMATN = WA_RECORD-EMATN.
    * Validating the Purchasing Organization for Blank/Null
                ELSEIF WA_RECORD-EKORG IS INITIAL.
    *             Inpfle err.occured
                  V_INPUTERROR_FLAG = C_INPUTERROR_FLAG_YES.
                  WA_RECORD-ERR_MSG = TEXT-010.
                  WA_RECORD-DEL_FLAG = C_TRUE.
                  MODIFY I_RECORD FROM WA_RECORD
                                  TRANSPORTING DEL_FLAG
                                               ERR_MSG
                                  WHERE LIFNR = WA_RECORD-LIFNR
                                    AND EVART = WA_RECORD-EVART
                                    AND EKORG = WA_RECORD-EKORG
                                    AND EKGRP = WA_RECORD-EKGRP
                                    AND WERKS = WA_RECORD-WERKS
                                    AND LGORT = WA_RECORD-LGORT
                                    AND KDATB = WA_RECORD-KDATB
                                    AND KDATE = WA_RECORD-KDATE
                                    AND ZTERM = WA_RECORD-ZTERM
                                    AND KTWRT = WA_RECORD-KTWRT
                                    AND EPSTP = WA_RECORD-EPSTP
                                    AND EMATN = WA_RECORD-EMATN.
    * Validating the Plant for Blank/Null
                ELSEIF WA_RECORD-WERKS IS INITIAL.
    *             Inpfle err.occured
                  V_INPUTERROR_FLAG = C_INPUTERROR_FLAG_YES.
                  WA_RECORD-ERR_MSG = TEXT-039.
                  WA_RECORD-DEL_FLAG = C_TRUE.
                  MODIFY I_RECORD FROM WA_RECORD
                                  TRANSPORTING DEL_FLAG
                                               ERR_MSG
                                  WHERE LIFNR = WA_RECORD-LIFNR
                                    AND EVART = WA_RECORD-EVART
                                    AND EKORG = WA_RECORD-EKORG
                                    AND EKGRP = WA_RECORD-EKGRP
                                    AND WERKS = WA_RECORD-WERKS
                                    AND LGORT = WA_RECORD-LGORT
                                    AND KDATB = WA_RECORD-KDATB
                                    AND KDATE = WA_RECORD-KDATE
                                    AND ZTERM = WA_RECORD-ZTERM
                                    AND KTWRT = WA_RECORD-KTWRT
                                    AND EPSTP = WA_RECORD-EPSTP
                                    AND EMATN = WA_RECORD-EMATN.
    * Validating the Contract Validity Start Date
                ELSEIF L_STARTDATE_C1 GT L_TODAY.             "#EC PORTABLE
    *             Inpfle err.occured
                  V_INPUTERROR_FLAG = C_INPUTERROR_FLAG_YES.
                  WA_RECORD-ERR_MSG = TEXT-004.
                  WA_RECORD-DEL_FLAG = C_TRUE.      "marking the record
                  MODIFY I_RECORD FROM WA_RECORD
                                  TRANSPORTING DEL_FLAG
                                               ERR_MSG
                                  WHERE LIFNR = WA_RECORD-LIFNR
                                    AND EVART = WA_RECORD-EVART
                                    AND EKORG = WA_RECORD-EKORG
                                    AND EKGRP = WA_RECORD-EKGRP
                                    AND WERKS = WA_RECORD-WERKS
                                    AND LGORT = WA_RECORD-LGORT
                                    AND KDATB = WA_RECORD-KDATB.
    * Validating the Contract Validity End Date
                ELSEIF L_ENDDATE_C1 LE L_TODAY.               "#EC PORTABLE
    *             Inpfle err.ocrd
                  V_INPUTERROR_FLAG = C_INPUTERROR_FLAG_YES.
                  WA_RECORD-ERR_MSG = TEXT-005.
                  WA_RECORD-DEL_FLAG = C_TRUE.    "marking the record
                  MODIFY I_RECORD FROM WA_RECORD
                                  TRANSPORTING DEL_FLAG
                                               ERR_MSG
                                  WHERE LIFNR = WA_RECORD-LIFNR
                                    AND EVART = WA_RECORD-EVART
                                    AND EKORG = WA_RECORD-EKORG
                                    AND EKGRP = WA_RECORD-EKGRP
                                    AND WERKS = WA_RECORD-WERKS
                                    AND LGORT = WA_RECORD-LGORT
                                    AND KDATB = WA_RECORD-KDATB
                                    AND KDATE = WA_RECORD-KDATE.
    * Checking for Material under the Plant for Agreement Type 'WK'
                ELSEIF WA_RECORD-EVART = C_WK.
                  READ TABLE I_MATNR INTO WA_MATNR
                                     WITH KEY MATNR = WA_RECORD-EMATN
                                     BINARY SEARCH.
                  IF SY-SUBRC NE 0.
                 V_INPUTERROR_FLAG = C_INPUTERROR_FLAG_YES. "Inpfle err.ocrd
                    WA_RECORD-ERR_MSG = TEXT-006.
                    WA_RECORD-DEL_FLAG = C_TRUE.   "marking the record
                    MODIFY I_RECORD FROM WA_RECORD
                                    TRANSPORTING DEL_FLAG
                                                 ERR_MSG
                                    WHERE LIFNR = WA_RECORD-LIFNR
                                      AND EVART = WA_RECORD-EVART
                                      AND EKORG = WA_RECORD-EKORG
                                      AND EKGRP = WA_RECORD-EKGRP
                                      AND WERKS = WA_RECORD-WERKS
                                      AND LGORT = WA_RECORD-LGORT
                                      AND KDATB = WA_RECORD-KDATB
                                      AND KDATE = WA_RECORD-KDATE
                                      AND ZTERM = WA_RECORD-ZTERM
                                      AND KTWRT = WA_RECORD-KTWRT
                                      AND EPSTP = WA_RECORD-EPSTP
                                      AND EMATN = WA_RECORD-EMATN.
                  ENDIF.
                ENDIF.  " checking of deletion indicator
              ENDIF.   " checking for success of vendor cross reference
            ELSE.
              V_INPUTERROR_FLAG = C_INPUTERROR_FLAG_YES. "Inpfle err.ocrd
              WA_RECORD-ERR_MSG = TEXT-041.
              WA_RECORD-DEL_FLAG = C_TRUE.   "marking the record
              MODIFY I_RECORD FROM WA_RECORD
                              TRANSPORTING DEL_FLAG
                                           ERR_MSG
                              WHERE WERKS = WA_RECORD-WERKS.
            ENDIF. " Plant checked to selection screen
          ENDIF.  " the records for which del_flag is initial
          CLEAR: WA_RECORD,
                 WA_T024E,
                 WA_ZMVXREF,
                 WA_LFA1,
                 WA_LOEKZ,
                 WA_MATNR,
                 L_TODAY,
                 L_STARTDATE_C,
                 L_ENDDATE_C,
                 L_STARTDATE,
                 L_ENDDATE.
        ENDLOOP.
        LOOP AT I_RECORD INTO WA_RECORD.
          IF WA_RECORD-DEL_FLAG = C_TRUE.
            APPEND WA_RECORD TO I_ERR_REC.
            CLEAR WA_RECORD.
          ENDIF.
        ENDLOOP.
      ELSE.
        MESSAGE E000 WITH TEXT-013.  " no records in the flat file
        STOP.
      ENDIF.
    ENDFORM.                    " validate_flatfile_data
    *&      Form  DOWNLOAD_ERROR_FILE
    *       Downloads all records along with the records encountering the
    *       input file validation error
    FORM DOWNLOAD_ERROR_FILE.
      DATA L_ISDIR TYPE C.
      IF V_INPUTERROR_FLAG = C_INPUTERROR_FLAG_YES.
        V_FILENAME = P_IPERR.
    * Check for the existence of the file.
        IF RB_LOCAL EQ C_TRUE.
          CALL FUNCTION 'TMP_GUI_GET_FILE_EXIST'
               EXPORTING
                    FNAME          = P_IPERR
               IMPORTING
                    ISDIR          = L_ISDIR
               EXCEPTIONS
                    FILEINFO_ERROR = 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.
          IF L_ISDIR EQ C_TRUE.
            MESSAGE I000 WITH TEXT-088.
            STOP.
          ENDIF.
        ENDIF.
        IF RB_LOCAL EQ C_TRUE.
    * Download the Input Error File.
          CALL FUNCTION 'GUI_DOWNLOAD'
               EXPORTING
                    FILENAME                = V_FILENAME
                    FILETYPE                = 'ASC'
                    WRITE_FIELD_SEPARATOR   = '#'
               TABLES
                    DATA_TAB                = I_ERR_REC
               EXCEPTIONS
                    FILE_WRITE_ERROR        = 1
                    NO_BATCH                = 2
                    GUI_REFUSE_FILETRANSFER = 3
                    INVALID_TYPE            = 4
                    NO_AUTHORITY            = 5
                    UNKNOWN_ERROR           = 6
                    HEADER_NOT_ALLOWED      = 7
                    SEPARATOR_NOT_ALLOWED   = 8
                    FILESIZE_NOT_ALLOWED    = 9
                    HEADER_TOO_LONG         = 10
                    DP_ERROR_CREATE         = 11
                    DP_ERROR_SEND           = 12
                    DP_ERROR_WRITE          = 13
                    UNKNOWN_DP_ERROR        = 14
                    ACCESS_DENIED           = 15
                    DP_OUT_OF_MEMORY        = 16
                    DISK_FULL               = 17
                    DP_TIMEOUT              = 18
                    FILE_NOT_FOUND          = 19
                    DATAPROVIDER_EXCEPTION  = 20
                    CONTROL_FLUSH_ERROR     = 21
                    OTHERS                  = 22.
          IF SY-SUBRC <> 0.
            MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
                  WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
          ENDIF.
        ELSEIF RB_SERVE EQ C_TRUE.
          OPEN DATASET P_IPERR1 FOR OUTPUT IN TEXT MODE.
          CHECK SY-SUBRC EQ 0.
          CLEAR WA_ERR_REC.
          LOOP AT I_ERR_REC INTO WA_ERR_REC.
            IF WA_ERR_REC-DEL_FLAG = C_TRUE.
              TRANSFER WA_ERR_REC TO P_IPERR1.
            ENDIF.
            CLEAR WA_ERR_REC.
          ENDLOOP.
          CLOSE DATASET P_IPERR1.
        ENDIF.
      ENDIF.
    ENDFORM.                    " DOWNLOAD_ERROR_FILE
    *&      Form  BUILD_BDC_DATA
    * Populates BDC for all the fields neccessary for Open Contract Creation
    FORM BUILD_BDC_DATA.
      DATA: L_MAT_INDEX TYPE I,
            L_CON_INDEX TYPE I,
            L_SCA_INDEX TYPE I.
      CLEAR   WA_BDCDATA.
      REFRESH: I_BDCDATA,
               I_MESSTAB.
    * Processing the bdc
      CLEAR: WA_RECORD,
             WA_RECORDPREV,
             VEN_FLAG,
             MAT_FLAG.
      LOOP AT I_RECORD INTO WA_RECORD.
    *    Checks for the del_flag of the record.
        IF     WA_RECORD-DEL_FLAG EQ C_TRUE
            OR WA_RECORD-DEL_FLAG EQ C_STRUE.
          CLEAR WA_RECORD.
          CONTINUE.
        ELSE.
          IF  WA_RECORDPREV-LIFNR NE WA_RECORD-LIFNR
           OR WA_RECORDPREV-EVART NE WA_RECORD-EVART
           OR WA_RECORDPREV-EKORG NE WA_RECORD-EKORG
           OR WA_RECORDPREV-EKGRP NE WA_RECORD-EKGRP
           OR WA_RECORDPREV-WERKS NE WA_RECORD-WERKS
           OR WA_RECORDPREV-LGORT NE WA_RECORD-LGORT
           OR WA_RECORDPREV-KDATB NE WA_RECORD-KDATB
           OR WA_RECORDPREV-KDATE NE WA_RECORD-KDATE
           OR WA_RECORDPREV-ZTERM NE WA_RECORD-ZTERM
           OR WA_RECORDPREV-KTWRT NE WA_RECORD-KTWRT.
            PERFORM BDC_DYNPRO      USING 'SAPMM06E' '0200'.
            PERFORM BDC_FIELD       USING 'BDC_CURSOR'
                                          'RM06E-LGORT'.
            PERFORM BDC_FIELD       USING 'BDC_OKCODE'
                                          '/00'.
    *   Cross-Reference check performed for the given Vendors
            CLEAR WA_T024E.
            READ TABLE I_T024E INTO WA_T024E
                               WITH KEY EKORG = WA_RECORD-EKORG
                               BINARY SEARCH.
            IF SY-SUBRC EQ 0.
              CLEAR WA_ZMVXREF.
              READ TABLE I_ZMVXREF INTO WA_ZMVXREF
                          WITH KEY D_ALTKN = WA_RECORD-LIFNR
                                   D_BUKRS = P_BUKRS
                          BINARY SEARCH.
              IF SY-SUBRC EQ 0.
                PERFORM BDC_FIELD   USING 'EKKO-LIFNR'
                                           WA_ZMVXREF-M_ALTKN.
              ENDIF.
              CLEAR WA_ZMVXREF.
            ENDIF.
            CLEAR WA_T024E.
            PERFORM BDC_FIELD       USING 'RM06E-EVART'
                                          WA_RECORD-EVART.
            PERFORM BDC_FIELD       USING 'EKKO-EKORG'
                                          WA_RECORD-EKORG.
            PERFORM BDC_FIELD       USING 'EKKO-EKGRP'
                                          WA_RECORD-EKGRP.
            PERFORM BDC_FIELD       USING 'RM06E-WERKS'
                                          WA_RECORD-WERKS.
            PERFORM BDC_FIELD       USING 'RM06E-LGORT'
                                          WA_RECORD-LGORT.
            PERFORM BDC_DYNPRO      USING 'SAPMM06E' '0201'.
            PERFORM BDC_FIELD       USING 'BDC_CURSOR'
                                          'EKKO-KTWRT'.
            PERFORM BDC_FIELD       USING 'BDC_OKCODE'
                                          '=AB'.
            PERFORM CONVERT_DATE USING WA_RECORD-KDATB V_CONV_DATE.
            PERFORM BDC_FIELD       USING 'EKKO-KDATB'
                                          V_CONV_DATE.
            PERFORM CONVERT_DATE USING WA_RECORD-KDATE V_CONV_DATE.
            PERFORM BDC_FIELD       USING 'EKKO-KDATE'
                                          V_CONV_DATE.
            PERFORM BDC_FIELD       USING 'EKKO-ZTERM'
                                          WA_RECORD-ZTERM.
            PERFORM BDC_FIELD       USING 'EKKO-KTWRT'
                                            WA_RECORD-KTWRT.
            VEN_FLAG = 1.
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          ENDIF.
    *          "first check for itemline
          IF  WA_RECORDPREV-EPSTP NE WA_RECORD-EPSTP
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           OR WA_RECORDPREV-KTMNG NE WA_RECORD-KTMNG
           OR WA_RECORDPREV-NETPR NE WA_RECORD-NETPR
           OR WA_RECORDPREV-PEINH NE WA_RECORD-PEINH
           OR WA_RECORDPREV-BPRME NE WA_RECORD-BPRME
           OR WA_RECORDPREV-IDNLF NE WA_RECORD-IDNLF
           OR WA_RECORDPREV-WEBRE NE WA_RECORD-WEBRE
           OR WA_RECORDPREV-MEPRF NE WA_RECORD-MEPRF
           OR WA_RECORDPREV-LTEX1 NE WA_RECORD-LTEX1
           OR VEN_FLAG EQ 1.
            V_IND = L_MAT_INDEX.
            IF V_IND GT 1.
              V_IND = 2.
            ENDIF.
            CONCATENATE 'RM06E-EVRTP(' V_IND ')' INTO V_EVRTP1.
            CONCATENATE 'RM06E-EPSTP(' V_IND ')' INTO V_EPSTP1.
            CONCATENATE 'EKPO-EMATN(' V_IND ')' INTO V_EMATN1.
            CONCATENATE 'EKPO-KTMNG(' V_IND ')' INTO V_KTMNG1.
            CONCATENATE 'EKPO-NETPR(' V_IND ')' INTO V_NETPR1.
            CONCATENATE 'EKPO-PEINH(' V_IND ')' INTO V_PEINH1.
            CONCATENATE 'EKPO-BPRME(' V_IND ')' INTO V_BPRME1.
            CONCATENATE 'RM06E-TCSELFLAG(' V_IND ')' INTO V_TCSELFLAG1.
            PERFORM BDC_DYNPRO      USING 'SAPMM06E' '0220'.
            PERFORM BDC_FIELD       USING 'BDC_OKCODE'
                                          '=NP'.
            PERFORM BDC_DYNPRO      USING 'SAPMM06E' '0220'.
            PERFORM BDC_FIELD       USING 'BDC_CURSOR'
                                          V_EVRTP1.
            PERFORM BDC_FIELD       USING 'BDC_OKCODE'
                                          '=DETA'.
            PERFORM BDC_FIELD       USING V_EPSTP1
                                          WA_RECORD-EPSTP.
            PERFORM BDC_FIELD       USING V_EMATN1
                                          WA_RECORD-EMATN.
            PERFORM BDC_FIELD       USING V_KTMNG1
                                          WA_RECORD-KTMNG.
            PERFORM BDC_FIELD       USING V_NETPR1
                                          WA_RECORD-NETPR.
            PERFORM BDC_FIELD       USING V_PEINH1
                                          WA_RECORD-PEINH.
            PERFORM BDC_FIELD       USING V_BPRME1
                                          WA_RECORD-BPRME.
            PERFORM BDC_DYNPRO      USING 'SAPMM06E' '0211'.
            PERFORM BDC_FIELD       USING 'BDC_CURSOR'
                                          'EKPO-WEBRE'.
            PERFORM BDC_FIELD       USING 'BDC_OKCODE'
                                          '=DETZ'.
            PERFORM BDC_FIELD       USING 'EKPO-IDNLF'
                                          WA_RECORD-IDNLF.
            TRANSLATE WA_RECORD-EVART TO UPPER CASE.
            IF WA_RECORD-EVART EQ C_WK.
              PERFORM BDC_FIELD       USING 'EKPO-WEBRE' 'X'.
            ENDIF.
            PERFORM BDC_DYNPRO      USING 'SAPMM06E' '0212'.
            PERFORM BDC_FIELD       USING 'BDC_CURSOR'
                                          'EKPO-MEPRF'.
            PERFORM BDC_FIELD       USING 'BDC_OKCODE'
                                          '=TXP'.
            PERFORM BDC_FIELD       USING 'EKPO-MEPRF'
                                          WA_RECORD-MEPRF.
            IF NOT WA_RECORD-LTEX1 IS INITIAL. "NE space.
              PERFORM BDC_DYNPRO      USING 'SAPMM06E' '0106'.
              PERFORM BDC_FIELD       USING 'BDC_CURSOR'
                                            'RM06E-SELKZ(02)'.
              PERFORM BDC_FIELD 

  • OM and PA data transfer from SAP 4.7 to ECC 6.0

    Dear Experts,
    hi
    i am working on one project where i will need to design the data transfer from SAP 4.7 to ECC 6.0. this is not a upgrade project.
    the data of PA and OM are in 4.7 which is existing system. i need to transfer entire data into ECC 6.0 so i can use that data for my E-Recruitment module ( we are doing E-rec fresh implementation.)
    we will keep both the systems (4.7 and ECC 6.0). ECC 6.0 will be used for E-Rec and OM only. for PA and Payroll we will use 4.7.
    can some one tell me,
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    2. which is the best method to transfer the OM structure and data from 4.7 to ECC?
    3. what are the risks?
    4. which system we should make master system and which will be the slave system? why ?
    your input will be much appreciated.
    thanks and regards
    chandra

    Hi Chandra,
    I was under the impression that you are planning to use PA & OM from 4.7, now I read it again.
    Now its advisable to keep ECC 6 as a master system, becoz OM is the stating point of the HR processes where all Orgnization unit, job, position exists. Later the same data can flow to the slave system for PA use. As OM is the starting point, this system should be the master system.
    Abou the IDoc interface.
    Check the basic type HRMS_A05, whether it has all the data you need to transmit. T-Code WE30
    If you need to add something you can create a Z version in WE31. I selected HRMS_A05 as it is present in both the SAP version.
    Next there are series of transaction you need to process. Check with technical person who hands IDoc interafcing.
    Steps are:
    Assigning Message type to IDOC Type with extension. T-Code WE82
    Create Logical System:
    T-Code SALE-> Basic Settings-> Logical Systems-> Define Logical System
    It is required to configure in the sending system as well as in the receiving system
    Assign Logical System to Client:
    T-Code SALE-> Basic Settings-> Logical Systems-> Assign Logical System to Client
    Create RFC Destinations:
    T-Code SM59, select ABAP connection of type 3.
    Create Distribution Model: T-Code BD64
    Generate Partner Profile: T-Code BD82
    Maintain sending system partner profile: T-Code WE20
    Link Message Type to Function Module T-Code WE57 in receiving system only
    Hope this will help.
    Let me know if you need anything else.
    BR/Manas

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