Thursday, 6 November 2014

How to create logical system in SAP



Logical systems playing very important role in sap system and Here we will see how to create logical system.

BD54 tcode used to create logical system and you have to follow certain rules while creating the logical system considering RFC connections, because RFC connection and logical systems are very important to connect a SAP system/client to another one.
So you have to follow naming convention as per you company standards and while your creating a logical system and RFC destinations same name for any client.

I will tell you why you need to do it.
RFC connection is used to establish a connection between systems but logical systems are used for system selection during configuration by default sap system will try to connect to another one based on your RFC destination, so you have to make sure your RFCdestination name and logical system names should be same.

Example:
Instance name: R47
Client: 800
<instance name>CLNT<no#>  i.e R47CLNT800 is my RFC and logical system name.        
Instance name, CLNT and 3 digit client number as naming standard I follow

Let’s see how to create a logical system below.
1. Go to BD54 tcode and it will pop up a warning message as it’s a cross client table which will show you a caution to handle this table

2. Click continue button and switch to change mode and check is there any logical system name is created for the client which you are about to create new one
3. Click “New Entries” button and enter your new logical system name as R47CLNT800 and a short description and click “Save”


4. While you try to save the entries in the table it will ask you to create a transport request and click “create request” button and enter a description for it


5. Now click save and copy the TR number if you wish to do the same configuration in another system in your landscape



6. Hit continue button to finish your logical system creation and you can see your entry is available in the table
Now you have successfully created a logical system and you can assign it to your client which will be available for selection ins SCC4 tcode 

1 comment:

  1. Thank you Radhakrishnan, very straight forward instructions.

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