Transaction code SM02 is a very useful transaction for communicating system changes or alerts to the entire community of SAP users. Most importantly, it can be used to broadcast messages regarding security profile changes so users will be aware of downtime or any change or information about the system.
Note
• System message text – The 3 lines are the space for the message.
• Server - Can be choose from the list
• Client - Client number.
• Lang. - Language ( will only be received based on sender specific language )
• Expires / Delete on – Message expired / when to delete time.