The LSMW Workbench is an tool that supports the transfer of data from non-SAP systems ("Legacy Systems") to SAP R/3 systems. This can be a one-time transfer as well as a periodic one.
LSMW also supports conversion of data of the legacy system in numerous way. The data can then be imported into the SAP R/3 system via batch input, direct input, BAPIs or IDocs.
Furthermore, the LSM Workbench provides a recording function that allows generating a "data migration object" to enable migration from any required transaction.
LSMW can be used for following 3 functions -
- Import data (legacy data in spreadsheet tables and/or sequential files)
- Convert data (from source format to target format)
- Import data (into the database of the R/3 application)
Also check out next tutorial on executing LSMW Step by Step