Automatic unique codes for nonumbered lists

A unique identifier is required for items in a non-numbered list. There shouldn't be an option to edit it even by administrators (analogue of #-code in numbered lists)

An example of the enhancement: Add another system property called for example (system code) and make it noneditable but accessible through formulas and imports.

How would it help their business process: Allow transfering data between models. Names can be edited in free order, codes may be left blank - both cases lead to not unique keys and failed imports. Hence in order to get unique #-code I have to switch for numbered lists which implies complicated import-based interface for new elements creation. Having an underlying unique code for each item would circumvent that, without having to create a user-visible unique identifier as a list property