NI is incorrect because the customer may very well have been home and if they track it, and call UPS, you will be questioned. NSN is also incorrect because there probably was a number, you just couldn't locate it. It doesn't matter whether you make an effort to find them or not. If UPS can't give us a way of honestly showing that we tried to find the right house but couldn't, then the package should be recorded as MISSED. Why do some of you care how UPS looks, or whether or not you get credit for the attempt? Always record honestly. We get paid either way.