I am a Pakistani national working in Portugal. My wife was issued a Portuguese resident visa valid for 120 days on 10th June 2017. Due to some unfortunate circumstances she is still not able to travel to Portugal, her visa will expire in the first week of October 2017.
Some friends told me that it is necessary to travel within one month after getting the visa. I want to know that is there some kind of restriction like this? And will there be any issue if she decides to travel to Portugal now. (The visa is a Type D Schengen visa).