Messaging System User Guide Maintaining Additional Details STP Rule Maintenance Fields Button 4.4.4 Fields Button This topic provides the systematic instruction to load fields button. Click ‘Fields’ tab to open the ‘User Defined Fields’ screen.The User Defined Fields screen is displayed.Description of the illustration msdtfsrl__cvs_tab_udf.jpg On User Defined Fields screen, specify the values of user defined fields. Parent topic: STP Rule Maintenance