lsmw

[former_member222933]

what are the major difference between LSMW and BDC?

i want distingbuish point

[Former Member]

hi kadam,

hi,

LSMW and BDC are vastly different.

BDC (Batch Data Communication) is a technology used for data transfer. it is meant for transferring data thru SAP transactions itself. when u use BDC for data transfer, the sequence of steps is the same as when u use standard sap transaction screens for data upload. the only difference is that u can use different options for foreground/background processing.

LSMW on the other hand is a tool that helps migrate data from a legacy system (non-sap system ) to SAP system. it offers u various options to use either batch input, direct input, BAPIs or idocs. it involves a series of some 17-18 steps to migrate data.It allows for central management of the processes required to carry out data uploads

Both BDC and LSMW are used for Data transfer. Usually LSMW is used initially when the project kicks off. The data from the legacy system is transferred to SAP using various methods like Direct input, IDOCs etc... This is usually a onetime process. Unlike LSMW, BDC can be used on regular basis for Data transfer.

Hope this clarifies your doubt.

Award points if useful

Regards,

Archna

[Former Member]

Hi sai kadam,

LSMW : Legacy System Migration Workbench.

BDC : Batch Data Communication.

<b>LSMW</b> : It is used for migrating the data b/w the Non-SAP

and SAP application to do for that we can take the Non-SAP

application data and Converts the data into the Legacy data.

(Legacy data means Cleansing data and Purging the data

After the Legacy data creation convert the data in to

the "Flat file". That flat file is in the form of text file

or excel format.If the file is in the form of text format

we can create the ".txt" file ("ABC.txt")and in the form of

excel ".xls" file is created. flat file for dos and .xls

file for IBM.

The converted file (.txt/.xls)is either upload or download.

The Upload functionality if used for .txt file to SAP and

where as Downloading is the concept while SAP to .txt/.xls

file.

<b>BDC</b> : It is also used for migrating the b/w the non-sap to

sap applicatios.

in lsmw below 5000 records are updating or inserting

purpose we can use the lsmw.but where as above 5000 records

are uploaded we can use BDC.

Please refer the following links also,

http://www.allinterview.com/showanswers/1646

I hope u get clarrified now.

please assign points if useful.

Thanks & Regards

Jayaprakash J

[Former Member]

lsmw is a thrid party tool.

upload methods:

idoc

bapi

direct input method

session

etc

in bdc.

direct

call tanscation

session