SAP Library - Find your answers

A logical system is an application system in which the applications
are coordinated to work in one common database. In SAP terms, a
logical system corresponds to a client

Like client number in the system, a logical system is assigned to each
client to differentiate between each business data and communication
for post processing of data to specific client.


To define and assign logical system to a client follow the steps
below.


1. Login as super user other than DDIC and SAP*
2. Execute tcode SALE.
3. Expand Sending and Receiving systems
4. Expand Logical Systems
5. click on define logical system.
6. Click on continue on next information window
7. Click on New Entries button
8. Provide logical system name and description for that like
DEVCLNT400
9. click on save.
10. click on new request button from next screen and click on save.


Assign logical system to client.


Once logical system is defined it can be assigned to specific client
in two ways.
a. using tcode sale
b. using tcode scc4


1. Execute SCC4
2. Click on Pencil button to open in change mode.
3. Click continue.
4. Double click on the client you want to assign the logical system (e.g. 400)
5. Click on logical system field and press F4.
6. Select the logical system you created now i.e. DEVCLNT400
7. Double click on that.
8. Click on save
9. Click on continue on warning screen.
10. Now logical system is assigned to client success fully.


Note: Don’t change the logical system never/ever in production if you
don’t know or with somebody’s request.