How to get Acknowledgement from legacy system in an Asynchronous scenario?

Hello Experts,
My current scenario is to send an invoice from ECC --> ABAP proxy --> PI --> webservice --> Legacy system & I need acknowledgement back to ECC system from legacy system. How SAP XI acknowledgements work in asynchronous scenarios?
Please guide.
Thanks & Regards,
Nidhi Kukreja

Hi nidhi,
please check following link
Also check this one.
hope this helps..
- Deepak.

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    • Screen number and Name of module pool program behind a particular transaction.
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    DATA TRANSFER program.
    Declaring internal table
    First Integral Table similar to structure like local file.
    Declaring internal table like BDCDATA
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    • DYNPRO: Screen Number. Set this field only in the first record for the screen.
    • DYNBEGIN: Indicates the first record for the screen. Set this field to X, only for the first record for the screen. (Reset to ‘ ‘ (blank) for all other records.)
    • FNAM: Field Name. The FNAM field is not case-sensitive.
    • FVAL: Value for the field named in FNAM. The FVAL field is case-sensitive. Values assigned to this field are always padded on the right, if they are less than 132 characters. Values must be in character format.
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    Session is intermediate step between internal table and database table. Data along with its action is stored in session i.e., data for screen fields, to which screen it is passed, the program name behind it, and how the next screen is processed.
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    Parameter – 2 is name of BDCTAB table.
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    N is no screen mode. No screen is displayed when you execute the transaction.
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    Parameter – 4 here you are specifying update type by which database table is updated.
    S is for Synchronous update in which if you change data of one table then all the related Tables gets updated. And sy-subrc is returned i.e., sy-subrc is returned for once and all.
    A is for Asynchronous update. When you change data of one table, the sy-subrc is returned. And then updating of other affected tables takes place. So if system fails to update other tables, still sy-subrc returned is 0 (i.e., when first table gets updated).
    Parameter – 5 when you update database table, operation is either successful or unsuccessful or operation is successful with some warning. These messages are stored in internal table, which you specify along with MESSAGE statement. This internal table should be declared like BDCMSGCOLL, a structure available in ABAP/4. It contains the following fields:
    1. Tcode: Transaction code
    2. Dyname: Batch point module name
    3. Dynumb: Batch input Dyn number
    4. Msgtyp: Batch input message type (A/E/W/I/S)
    5. Msgspra: Batch input Lang, id of message
    6. Msgid: Message id
    7. MsgvN: Message variables (N = 1 - 4)
    For each entry, which is updated in database, table message is available in BDCMSGCOLL. As BDCMSGCOLL is structure, you need to declare a internal table which can contain multiple records (unlike structure).
    Steps for CALL TRANSACTION method
    1. Internal table for the data (structure similar to your local file)
    2. BDCTAB like BDCDATA
    3. UPLOAD or WS_UPLOAD function to upload the data from local file to itab. (Considering file is local file)
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    Populate BDCTAB table.
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    Update <S/A>.
    Refresh BDCTAB.
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    1. Data is not updated in database table unless Session is processed. Immediate updation in database table.
    2. No sy-subrc is returned. Sy-subrc is returned.
    3. Error log is created for error records. Errors need to be handled explicitly
    4. Updation in database table is always synchronous Updation in database table can be synchronous Or Asynchronous.
    Error Handling in CALL TRANSACTION
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    1. Internal table for the data (structure similar to your local file)
    2. BDCTAB like BDCDATA
    3. Internal table BDCMSG like BDCMSGCOLL
    4. Internal table similar to Ist internal table
    (Third and fourth steps are for error handling)
    5. UPLOAD or WS_UPLOAD function to upload the data from the local file to itab. (Considering file is local file)
    6. Loop at itab.
    Populate BDCTAB table.
    Call transaction <tr.code> using <Bdctab>
    Mode <A/N/E>
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    Messages <BDCMSG>.
    Perform check.
    Refresh BDCTAB.
    7 Form check.
    IF sy-subrc 0. (Call transaction returns the sy-subrc if updating is not successful).
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    Authorization problems.
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    • Click Get Transaction.
    • Return to BI.
    • Click overview.
    • Position the cursor on the just recorded entry and click generate program.
    • Enter program name.
    • Click enter
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    Need for Background processing
    When a large volume of data is involved, usually all batch inputs are done in background.
    The R/3 system includes functions that allow users to work non-interactively or offline. The background processing systems handle these functions.
    Non-interactively means that instead of executing the ABAP/4 programs and waiting for an answer, user can submit those programs for execution at a more convenient planned time.
    There are several reasons to submit programs for background execution.
    • The maximum time allowed for online execution should not exceed 300 seconds. User gets TIMEOUT error and an aborted transaction, if time for execution exceeds 300 seconds. To avoid these types of error, you can submit jobs for background processing.
    • You can use the system while your program is executing.
    This does not mean that interactive or online work is not useful. Both type of processing have their own purposes. Online work is the most common one entering business data, displaying information, printing small reports, managing the system and so on. Background jobs are mainly used for the following tasks; to process large amount of data, to execute periodic jobs without human intervention, to run program at a more convenient, planned time other than during normal working hours i.e., Nights or weekends.
    The transaction for background processing is SM36.
    Define jobs&#61614; Jobs &#61614; Administration &#61614;Tools
    &#61614;System Jobs&#61614;services
    Components of the background jobs
    A job in Background processing is a series of steps that can be scheduled and step is a program for background processing.
    • Job name. Define the name of assigned to the job. It identifies the job. You can specify up to 32 characters for the name.
    • Job class. Indicates the type of background processing priority assigned to the job.
    The job class determines the priority of a job. The background system admits three types of job classes: A B & C, which correspond to job priority.
    • Job steps. Parameters to be passed for this screen are as follows:
    Program name.
    Variant if it is report program
    Start criteria for the job: Option available for this are as follows:
    Immediate - allows you to start a job immediately.
    Date/Time - allows you to start a job at a specific name.
    After job - you can start a job after a particular job.
    After event - allows you to start a job after a particular event.
    At operation mode - allows you to start a job when the system switches to a particular operation mode.
    Defining Background jobs
    It is two step process: Firstly, you define the job and then release it.
    When users define a job and save it, they are actually scheduling the report i.e., specifying the job components, the steps, the start time.
    When users schedule program for background processing, they are instructing the system to execute an ABAP/4 report or an external program in the background. Scheduled jobs are not executed until they are released. When jobs are released, they are sent for execution to the background processing system at the specified start time. Both scheduling and releasing of jobs require authorizations.
    Many times in transaction pop up screen appears and for this screen you don’t pass any record but some indication to system telling it to proceed further. For example: The following screen
    To handle such screen, system has provided a variable called BDC_CURSOR. You pass this variable to BDCDATA and process the screen.
    Usually such screen appears in many transactions, in this case you are just passing information, that YES you want to save the information, that means YES should be clicked. So you are transferring this information to BDCDATA i.e., field name of YES which is usually SPOT_OPTION. Instead of BDC_OKCODE, you are passing BDC_CURSOR.
    BDC_CURSOR is also used to place cursor on particular field.
    Following program demonstrates how data is passed from flat file to SAP transaction and further to database table by using SESSION method.
    The transaction is TFBA (to change customer).
    A simple transaction where you are entering customer number on first screen and on next screen data is displayed for the particular customer number. Field, which we are changing here, are name and city. When you click on save, the changed record gets saved.
    Prerequisite to write this BDC interface as indicated earlier is:
    1. To find screen number
    2. To find screen field names, type of the field and length of the field.
    3. To find BDC_OKCODE for each screen
    4. Create flat file.
    Flat file can be created in your hard disk as follows:
    1 Vinod Krishna Hyderabad
    2 Kavitha Secunderabad
    3 Kishore Hyderabad
    (Where 1st character field is Customer number, 2nd field is Customer name and 3rd field is City.)
    To transfer this data to database table SCUSTOM following interface can be used.
    Following internal table is to upload flat file.
    *Following internal table BDCDATA is to pass date from internal table to session.
    DATA: DATE1 LIKE SY-DATUM. DATE1 = SY-DATUM - 1. “ This is for Hold Date
    To upload flat file to internal table.
    NO_BATCH = 4
    OTHERS = 6.
    If sy-subrc = 0.
    Calling Function to Create a Session
    KEEP = ‘X’
    RUNNING = 8
    OTHERS = 11.
    If sy-subrc = 0.
    *-- MAIN Logic--
    TCODE = ‘TFBA’
    NOT_OPEN = 2
    OTHERS = 7.
    Calling function to close the session
    NOT_OPEN = 1
    OTHERS = 3.
    Create BDC Data
    Passing information for 1st screen on BDCDATA
    BDCTAX-DYNPRO = 100.
    Passing field information to BDCDATA
    BDCTAB-FVAL = ‘/5’.
    Passing screen information for next screen to BDCDATA
    BDCTAB-DYNPRO = 200.
    Passing screen information to BDCDATA
    Passing screen information to BDCDATA
    Same steps to be repeated for CALL TRANSACTION
    The only difference between the two types of interface is in Session method, you create session and store information about screen and data into session. When session is processed the data is transferred to database. While in CALL TRANSACTION, data is transferred directly to database table.
    Follow above Code till MAIN Logic. Even the Subroutine should be copied
    Call transaction ‘TFBA’ using BCDDATA Mode ‘A’ Update ‘S’.
    check this link:
    Re: bdc mm01
    What is IDOC ?
    Standard SAP format for electronic data interchange between systems (Intermediate Document). Different message types (such as delivery confirmations or purchase orders) normally represent different specific formats, the IDoc types. However, multiple message types with related content can be assigned to one IDoc type: For example, the IDoc type ORDERS01 transfers the “logical” message types ORDERS (purchase order) and ORDRSP (order confirmation).
    Also check these link it will help you.
    idoc information
    Troubleshooting of ALE Process - /people/raja.thangamani/blog/2007/07/19/troubleshooting-of-ale-process
    IDOC Convertion
    Please check this online document for ALE and IDoc.
    Also check this links for additional information.
    serialization /people/alessandro.guarneri/blog/2006/11/26/content-based-serialization-dynamic-queue-name-in-xi
    /people/prateek.shah/blog/2005/06/08/introduction-to-idoc-xi-file-scenario-and-complete-walk-through-for-starters - IDoc to File
    IDOc testing - /people/
    /people/ravikumar.allampallam/blog/2005/06/24/convert-any-flat-file-to-any-idoc-java-mapping - Any flat file to any Idoc
    /people/pooja.pandey/blog/2005/07/27/idocs-multiple-types-collection-in-bpm - Collection of IDoc to Single File
    /people/stefan.grube/blog/2006/09/18/collecting-idocs-without-using-bpm - collecting IDocs without BPM
    /people/prateek.shah/blog/2005/06/08/introduction-to-idoc-xi-file-scenario-and-complete-walk-through-for-starters - IDoc to File
    Hope it will be useful to u....plz don't forget to reward points...!!!!

  • *Journal Entries while uploading the vendor master data from legacy system*

    hi SAP Folks,
    can any one of you tell me the journal entries while uploading the vendor master data from legacy system to SAP system.
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    thanks in advance.
    Edited by: ravindranath manikonda on Nov 24, 2008 1:12 PM

    you will be having  only one entry logically
    i.e. Opening Bal. clrng A/c Dr.
           To Vendor A/c Cr.

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