I have always had this question since I started to learn German that when to use auf and when to use an . As an example I can name the word "Antrag". When to use preposition "an" and when to use preposition "auf". Can they be used interchangeably? If not, what's the difference?
Einen Antrag an den Betriebsrat stellen.
Einen Antrag auf den Betriebsrat stellen.
Thanks in advance.