Answer Posted / anupa

Legacy System Migration Workbench (LSMW) is a SAP tool which
you can use to transfer data into an R/3 System.

This method is very widely used during cut-over, to transfer
legacy system data in to SAP. You can use same to do any
changes to existing data in SAP system as well.

Eg: If you want to change any field value in the material
master, you can download those data from the table in to an
Excel file. Then you can change relevant values in the Excel
sheet. After that using a LSMW, you can write new values
back to SAP.

Below document will explain you on how to create a sample
LSMW. Based on those steps, you should be able to create
your own LSMW.


Refer below link for more information on How to create a
sample LSMW.

http://learnsaptips.blogspot.com/2010/08/how-to-create-sample-lsmw.html

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