The System definition data areas are used to hold defaults and values (i.e. parameters) used by LANSA in your installation. For example, when creating a new field, several of the field definition characteristics are displayed with a default value. These defaults are obtained from the relevant system definition data area.
The maintenance of the LANSA system data areas should be assigned to the LANSA System Administrator as one of the LANSA System Administrator's tasks is to review and maintain the system defaults to ensure that they are appropriate.
For details of these data areas and a comprehensive list of defaults, refer to Review System Settings in the LANSA for i User Guide. You should change any data area options via the System Setting dialogs.