How do you send popup message to a specific user in sap by running a function module!
SM02 sends messages to all users, not a specific one
So use function module TH_POPUP
Goto Transaction code SE37 enter the function module name & test run it
the resulting screen is shown below, type the details and execute
The the user will see message like this ( System name is blurred for privacy reasons)
The user must be logged into the system to receive the message