A trusted RFC connection is used to define Remote Function Call (RFC Connection) between two systems. By creating a trusted RFC connection between two systems, it allows you to create a trusted-trusting relationship between systems wherein, you can communicate and exchange information and data.
To create a new trusted RFC connection, you can use T-Code − SM59. There are different RFC connections supported as per requirement.
Click on the 3rd icon to open a new connection wizard → click on Create button and a new window will open.