Im a first year cover driver and have a question about signed info notices. I will get to a signature required stop and find a signed info notice on the door. Im not sure how to complete these stops. I try and hit the "deliver" key and then the "SDN" soft key in the bottom right corner. I assume this stands for signed delivery notice. Whenever i push that button, the screen comes up that say "No DR allowed, signature required". So i end up just leaving another infonotice. This has happened about 12 times. How are these stops sheeted, am i doing something wrong?