PASSPORT (MAIN CRITERION)
Requirement: Issued less than 10 years ago + sufficient validity margin.
Why is this important? The Residence Permit is issued for 2 years. If your passport expires sooner, the Migration Department will issue the permit only until the end of the passport validity (minus 3 months). Financial trap: you will get a short permit and soon will have to pay state fees for a new one again. My advice: if your passport is old, replace it at home.
