Believe or not, there is a fine graded Message Handling concept in SAP TM. Messages sent through BOPF – FBI- FPM Environment may have certain visibility settings. This is a control demand based on user experitse or area. Key users may want different level of message detailization than other users for example. You can setup the minimum severity, level of detail or problem class to display, such as to display errors only or even warnings raised by validations. You can activate to save an application log, which can become handy during troubleshooting.