Thanks
@legalfalcon for reply.
But I don't plan on staying in Canada, I am just going to validate my PR landing at the border and then make U-turn right away in 2 to 3 hours(after completing the PR process).
That is the reason I am asking that since I got PR through Saskatchewan PNP, can I go and validate my PR at Buffalo, NY border and return back the same day? And if I can validate my PR process at Buffalo, NY border, then can the officer give me a hard time saying that why did you come here and you were supposed to go to Saskatchewan border.