How to identify mapped objects when testing web page in NameMapping?

How to identify mapped objects when testing web page in NameMapping? The problem is that for several units the same path or class is used. So combined properties do not work. If I use full path name then it takes also version what is not correct for my test cases as it won't work on newer version testing. Is it possible to create some identification by my self for each tested unit in NameMapping? Or is there any other solution?