On the S.10.05 Object Parameter Detail screen, select the object parameter and assign the appropriate attributes in the second (Parameter Detail) block.
Only attributes that have the Ident check box selected are used to generate ident numbers.
At a minimum, enter all of the attributes that are required to purchase an item. For example, idents for pipes must be built with the nominal size and the schedule, and idents for bolts must include the bolt size and the diameter.