Data upload

[Former Member]

dear all,

Can somebody explain me the process of LSMW

Zenia

[Former Member]

Dear Zenia,

SAP Data Migration with LSMW

No ABAP effort are required for the SAP data migration. However, effort are required to map the data into the structure according to the pre-determined format as specified by the pre-written ABAP upload program of the LSMW.

The Legacy System Migration Workbench (LSMW) is a tool recommended by SAP that you can use to transfer data once only or periodically from legacy systems into an R/3 System.

More and more medium-sized firms are implementing SAP solutions, and many of them have their legacy data in desktop programs. In this case, the data is exported in a format that can be read by PC spreadsheet systems. As a result, the data transfer is mere child's play: Simply enter the field names in the first line of the table, and the LSM Workbench's import routine automatically generates the input file for your conversion program.

The LSM Workbench lets you check the data for migration against the current settings of your customizing. The check is performed after the data migration, but before the update in your database.

So although it was designed for uploading of legacy data it is not restricted to this use.

We use it for mass changes, i.e. uploading new/replacement data and it is great, but there are limits on its functionality, depending on the complexity of the transaction you are trying to replicate.

The SAP transaction code is 'LSMW' for SAP version 4.6x.

For those with the older SAP version (4.7 and below), the data migration programs might not have been pre-loaded.

You can download the LSMW at no cost from SAPNet under Services, SAP Methodology and Tools, category Tools.

If you are an existing SAP customer with an OSS ID, you can access the SAP Service Marketplace to download the LSWM for your Basis teams to install to your SAP system: http://service.sap.com/lsmw

The LSM Workbench carries out the following tasks:

Reads the transfer data from one or more files (for example, spreadsheets, sequential files etc.)

Converts the data from the source format into the target format

Note that with background processing, the input file must not be located in the presentation server. Access to presentation server files is only possible when you are working online.

Zenia

[Former Member]

Steps for ur reference

Hi,

1. Maintain Attributes:

Here you have to choose the second option and you can do the recording how this should work. Then assign the same to the Batch Input Recording name.

2. Maintain Source structure:

Create a structure name

3. Maintain Source field:

In this you have to create a structure same as taht of the input file

eg: name

age

sex

4. Maintain structure relations:

This will link the structure to the input file.

5. Maintain field mapping and conversion rules:

Here is the place where you can do coding, depending upon the code you have written or assignment you have done the values will get picked up from the file and get processed.

6. Maintain field mapping and conversion rules:

If you have any fixed values you can define here.

7. Specify files:

Specify the input file path and type.

8. Assign files:

This will assign ur file to the Input file

9. Read Data:

This will read ur data from teh file.

10. Dispaly Read Data:

You can see the uploaded data

11. Convert Data

This will convert the data to the corresponding format for processing

12. Display Converted data:

13. Create batch input session

Here this will create a batch input session for processing

14. Run Batch Input session:

By clicking on the session and process the same you can do teh needfu.

Hope this helps you.

[Former Member]

Hi,

Please go through the following link..... It answers all ur questions.

http://www.scmexpertonline.com/downloads/SCM_LSMW_StepsOnWeb.doc

Regards,

Buvana

[Former Member]

To put it in a simple way,The LSM Workbench covers the following steps:

Read the legacy data from one or several files (e.g. spreadsheet tables, sequential files).

Convert the data from source format to target format.

Import the data using standard interfaces (Batch Input, Direct Input, BAPI, IDoc).

Experiences made in successful implementation projects have shown that using the LSM Workbench significantly contributes to accelerating data migration.

SAP provides this tool along with documentation to customers and partners free of charge.

Users of the LSM Workbench receive the usual support via SAP Net - R/3 Frontend (component BC-SRV-DX-LSM).