You don't know what smart dress is? Seriously?
Turn up with a tie on and you can always remove it to fit in.
Your employers will appreciate the fact that you were ready to fit any situation.
the code is Smart Dress. Please explain what this is?
Do wht every other office worker seems to do for their "smart" dress, wear a pair of trousers too short, and a really baggy and ill fitting shirt, then stick a crappy looking tie into the mix. Perhaps even get a baggy suit jacket that doesn't match the trousers if you want to go really "smart". Nice and "smart" then...
Are you 100% certain that "smart dress" doesn't mean just that, and that they expect you to roll up in some off the shoulder little black number?