Official list of unitcodes Posted on 23/09/202023/09/2020 by maestro Whenever there is measurement it could be necessary to use the unitCode for setting the units for the value. Now the guidelines for the data model’s creation include the place to find out these unit codes. See section units. The list of UN/CEFACT Common Code (3 characters) can be download from this page. Or the list directly from here.