How to create RFC destination between two ABAP System

Details:

Create RFC Destination between two ABAP system of type 3

Steps:

1.  Go to the transaction SM59.

2. Click on Create as shown in the screenshot.

3. Provide RFC Destination , Connection Type, Hostname and Instance no.. As a good practice for the ABAP connection always recommended to create a destination with name convention <SID>CLNT<CLIENT_NO>.

4. Click on Logon Security tab and provide target system Client no., Username and Password and Click on Save to Save the RFC destination.

5. Click on Unicode tab. Now a days all the abap systems are the unicode system. So select the UNICODE radio button and Click on Save.

6.  To test connection goto the shown path to test if the target system is reachable. If the test is successful result will be as shown below.

7. You can also perform the authoziation test to test if maintained username / password in RFC destination is correct and user have enough autorization for the connection. Test output will be as shown.

Note:

- Always make sure to use the SYSTEM type user for the RFC destination.

- Never use DIALOG / COMMUNICATION user type in RFC destination, if the system parameter login/password_expiration_time is set then the user password will expire and RFC will fail.

- In some special case scenario SERVICE type user can be used in RFC destination.