Answer / kumardk

LSMW is legay system migration work bench is basiclly used
for migrating data from legacy system to SAP system.
Where as CATT is computer adided testing tool used for
tesing but now days it is used for migartion manily by the
functional consultants

Answer / savita

SAP users use CATT frequently to upload master data or to
make changes to master data records. SAP Consultants and
Abapers tend to use it for creating test data. The
transactions run without user interaction. You can check
system messages and test database changes. All tests are
logged. The CATT records your keystrokes while performing
the actual transaction. You then identify the fields that
you wish to change in that view. Then export this data to a
spreadsheet to populate with the data required. This is
uploaded and executed saving you keying in the data
manually.

To perform CATT, it has to be enabled in your production
environment (your systems administrator should be able to
do this - SCC4). You will also need access to your
development system to create the CATT script.

The process of uploading data with a CATT:

Activate CATT in your client
In transaction code SCC4 - click the change button
Double click on the client number
In the Restriction section, tick Allows CATT processes to
be started.

Upload data using CATT

1. Create Import variant for the fields you need
Transaction SCAT
Goto Parameters
Create Import Variant
Goto Variant -> Edit
Goto Variant -> Fast entry or F9
Duplicate 01

2. To change the MRP Group for a list of Material
Assuming that I want to change the MRP Group for a list of
Material.
My text files should look something like this:
[Variant ID] [Variant Text] &ZDISGR &ZMATNR
--> Parameter texts MRP group Material
--> Default Values M1 A001
*** Changes to the default values displayed above not
effective
#01 M1 A001
#02 '' A002
#03 M1 A003
Note : '' denotes a blank in the field. e.g. Material A002
MRP group will be replaced by a blank.

3. Configure the recorded entry fields to read from the
imported text file data
In the CATT : Maintain functions test case Screen
Double click on the Object Name
Double click on the screen number with your desired fields
Park the cursor on the fields
Click Edit -> Details
Fill in the Parameters Name and Field Contents
Finish Save it.

Assign your text file data.

In the CATT : Execute test case Screen
Click External from file and choose your text file
CATT will now read from your text file and update whatever
data you have specified.

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