You can specify that system fields and user-defined fields are mandatory. System fields are set as mandatory in Administrator. User-defined fields are set as mandatory when creating the user-defined fields in Administrator or in the Set Up User-Defined Fields dialog box.
When you create or modify entries, Maximizer checks that all mandatory fields have values. If any mandatory fields are empty, you are prompted to enter a value for the field. If you are working in the Details pane, any user-defined fields that are empty are added to the current Key Fields list.