If the item number is a single segment, then leading zeros are trimmed and the field is right justified in the length of the key (to conform with all other Adagio key fields). If the item number is made up of two or more segments, then it remains left justified and leading zeros are allowed. The item format is set when the database is first defined.

Dakota's Toolkit for Adagio can be used to change both the format and size of a item number.