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Difference between LSMW and BDC

Hi, Please explain the main difference bet LSMW and BDC?

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  • Best Answer
    Posted on Aug 14, 2008 at 10:32 AM

    Hi,

    BDC- It is Batch data communication. Its used for data conversion from legacy system to SAP system. Only technical people can do it. Tcode is SHDB.

    LSMW- It is legacy system migration workbench. Its also used for data conversion from legacy system to SAP system. But it is role of functional consultant.

    There are 14 steps in LSMW. As soon as you complete the one step, automatically it will go to next step.

    In general you can use LSMW. But if you want to transfer more than 40,000 data, then it is not possible in LSMW. That time you can take help of BDC.

    Please check these thread,

    https://www.sdn.sap.com/irj/sdn/profile?userid=3781605

    https://www.sdn.sap.com/irj/sdn/profile?userid=3781605

    Regards,

    R.Brahmankar

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  • author's profile photo Former Member
    Former Member
    Posted on Aug 14, 2008 at 11:00 AM

    hi

    BDC(Batch data communication) is program tool used to load the data which program developer creates from scratch.Traditionaly this is the mechanism used to load the data.thsi you need to do technacally for this you required technical knowledge.

    LSMW - Legacy System Migration Workbench SAP has developed user friendly tool for loading the data of the specific objects(vendor master, customers, orders so on) and this can be used by the functional consultant or end user without understanding the underlying program code. No ABAP knowledge is required to use this tool. This tool can be used to load the legacy data and also to conduct mass data changes in the system.

    -ashok

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  • Posted on Aug 14, 2008 at 11:10 AM

    Dear Yadav,

    LSMW & BDC are uploading tools used to upload the master data for various modules.

    LSMW - Legacy System Migration Workbench,where LSMW is the T Code wherein after after entering

    into LSMW,you have to select the Project,sub-project,Object for uploading the data.

    Say For Eg: Uploading the Basic view data for 10000 materials.So first the data's will be filled in the

    template(An Excel file where the row's will show what data you have to fill,what's the data type like

    character length,and the Field name,once the data is filled the excel sheet will be saved as .txt file for

    upload).

    So for each master data upload the necessary steps has to be performed either by Recording method or

    Direct input method.Say the project & subproject might be same,but the object wud be different.

    Eg: Project name is TEST & Sub-project name is TEST11 & Object name for Basic view upload is

    TEBASIC and with the same project & subproject ,object name say TEPLANT it will be for uplaoding the

    plant view datas.

    So this LSMW will be used only when we require mass data to be uploaded into SAP.

    Before Golive all the material master's,Work center's can be created using LSMW.

    BDC - Batch data communication.

    So for BDC,first the recording will be done in T code SHDB.For this recording the T code and the program

    generation will be done in T code SE93.

    So first this a customised input screen will be developed.

    This is generally used for uploading BOM,routing datas.

    I hope this will help to get an idea.

    Regards

    Mangalraj.S

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