System fields
Values in system fields are automatically added when the record is saved, and can be displayed by right-clicking on the record and selecting Properties from the menu. You cannot edit the values in a system field.
However, you can search using these values:
Record ID - the record's ID.
Create Date and Create User - the date and time the record was created, and the username of the person who added the record.
Update Date and Update User - the date and time the record was last updated, and the username of the person who made the change.