Just to make it crystal-clear: I am not asking for a translation of the meaning underlying n/a, I am asking for a corresponding German abbreviation which can be understood without a glossary by a native speaker of German.
In English the abbreviation n/a or occasionally n.a. stands for not available. The corresponding German translation would be "nicht verfügbar".
Is there a German abbreviation delivering the exact same meaning as "nicht verfügbar" which would be commonly understood without explicit explanation?