I have to admit I found the very concept of using a value that could change as a primary repulsive from an aesthetic point of view. It's just bad database design.
Still, I feel for you. My primary concern, though, was that it made life more complicated for me. But email adresses were separate from ERP user names, and we did not have two employees with the same name, so first.last@company.com was good enough for our purposes.
Still, I feel for you. My primary concern, though, was that it made life more complicated for me. But email adresses were separate from ERP user names, and we did not have two employees with the same name, so first.last@company.com was good enough for our purposes.