In default processing, any blank fields in the component are
set to their default value. You can
specify the default value either in the Record Field Properties, or in
FieldDefault PeopleCode.
If the field is already having a value then no default processing happens. If the record field is having a default value and the field is empty when component is loaded, the the value is defaulted based on the record field property. If both of the cases fail, then the component processor will execute the Field Default event and try to get a value. Note: Field default is executed only if a) field doesnot have a value and b) the record field property has no default defined.