I currently reside in India and hold an Indian passport. I am applying for Austrian national visa (visa D). In the application form, I am supposed to specify the bordercrossing point (Grenzübergang) (see the third row from the end on the 1st page in the linked form). I would like to know if the expected answer is the entry point into Austria or the entry point into the Schengen area.
To be particular, my travel plan from Mumbai to Vienna includes a short (~ 3.5 hours) layover in Frankfurt, Germany from where I will take a connecting flight to Vienna. So while my entry point into Austria will be Vienna, my entry point into the Schengen area will be Frankfurt. So which one of those cities should be mentioned as the bordercrossing point(Grenzübergang) in the visa application form?.
Thank you for your time and consideration.