I plan to use RFC that is link between R/3 to external System.
The system I'm thinking is that R/3 is the data storage target, external System is the Data Input.
So, I use RFC to call function Call from external System.
Now,The things I don't know is,
When I use Common User for calling RFC, All I need is one Common User license, Is that possible?
The external System is used by a lot of users.
Should I pay a lot more license fee than one common user.