If I entered the Schengen area with a non-European passport. But I also posses a Schengen passport. Will staying over 90 days cause any troubles?
I have spoken with the migration department of the airport and they told me it's ok and that I have the right to stay over 90 days without exiting since I am Schengen citizen. But this time I would have to use the European passport to exit after the 90 days.
The question is: will my other passport having only an entry stamp but no exit cause me problems later on, if I am travelling without my European passport?
Both coming to Europe but specially visiting non-European countries: will non-European countries be paying attention that this passport has only an entry stamp to Europe but no exit? If they do notice will it suffice to explain it, or will I always have to carry both passports to prove that I was allowed to exit Schengen without a stamp.
I could always just do a same day trip to the UK to get the exit stamp if this means avoiding having troubles using my other passport later on. But I would rather avoid waisting money and time if not really necessary