It wasn't a must have. I've written a letter explaining why I couldn't surface it at the time of application and that I'll happily do it once I have it with me. I also submitted bank account details from my home country proving that I have the sufficient funds to sponsor my wife's application. I hope that will be enough but im guessing that they might require additional time to process the application.Was NOA necessary according to the checklist (Im sure it's important but is the a must)? If you think it could be a problem, submit it through webform once you get your case number from them. But until you get the file number from AOR1 all we can do is stay fingers crossed!