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pls tell the differences between LSMW and BDC?

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  • author's profile photo Former Member
    Former Member
    Posted on Jul 04, 2007 at 03:17 AM


    BDC and LSMW both are use for loading data into SAP system. The difference is LSMW is loading tool by SAP where you can use various methods to upload, massage data or cleansed your data while loading into SAP from legacy system. The method can be BDC, BAPI, Idocs or SAP ABAP codes. Usually in BDC the user has to write an ABAP program or use other utility to load legacy data

    in LSMW we find IDOC, BAPI,session /direct method,batch input recording

    IDOC,BAPI are used to distrubuted environment. cross-application components.

    in BDC's file is created's not secure.





    Don't forget to reward if useful....

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  • Posted on Jul 04, 2007 at 03:27 AM

    Hi Ramnarayana,


    BDC is a technology used for data transfer.

    It is meant for transferring data through SAP transactions itself.

    It is for inbound / outbound processing.

    When you use BDC for data transfer, the sequence of steps is the same as when you use standard sap transaction screens for data upload.

    The only difference is that you can use different options for foreground and background processing.

    Batch Data Communication (BDC) is the process of transferring data from one SAP System to another SAP system or from a non-SAP system to SAP System.

    BDC is an automatic procedure.

    This method is used to transfer large amount of data that is available in electronic medium.

    BDC can be used primarily when installing the SAP system and when transferring data from a legacy system (external system).

    BDC uses normal transaction codes to transfer data.

    Types of BDC :

    CLASSICAL BATCH INPUT (Session Method)



    This method is also called as ‘CLASSICAL METHOD’.


    Asynchronous processing.

    Synchronous Processing in database update.

    Transfer data for more than one transaction.

    Batch input processing log will be generated.

    During processing, no transaction is started until the previous transaction has been written to the database.


    This is another method to transfer data from the legacy system.


    - Synchronous processing. The system performs a database commit immediately before and after the CALL TRANSACTION USING statement.

    - Updating the database can be either synchronous or asynchronous. The program specifies the update type.

    - Transfer data for a single transaction.

    - Transfers data for a sequence of dialog screens.

    - No batch input processing log is generated.


    LSMW on the other hand is a tool that helps migrate data from a legacy system (non-sap system ) to SAP system.

    It is for inbound processing.

    It offers you various options to use either batch input, direct input, BAPIs or idocs.

    It involves a series of steps to migrate data.

    The main advantages of the LSM Workbench:

    - Part of R/3 and thus independent of individual platforms

    - A variety of technical possibilities of data conversion:

    - Data consistency due to standard import techniques:

    Batch input

    Direct input

    BAPIs (Business Application Programming Interfaces)

    IDocs (Intermediate Documents)

    The import technique to be used in an individual case depends on the business object.

    - Generation of the conversion program on the basis of defined rules

    - Clear interactive process guide

    - Interface for data in spreadsheet format

    - Creation of data migration objects on the basis of recorded transactions

    - Charge-free for SAP customers and SAP partners

    <b><i>Please check the below link for your kind reference:</i></b>

    Diff. between LSMW & BDC?

    <b>Please reward points if it is useful.

    Cheers !


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