There is a return decision without an entry ban.
If only departure is ordered and no duration of a re-entry ban is named, this is a return decision under section 52 FPG. It requires you to leave Austria but does not prohibit return for a set period. The question of a voluntary departure and its deadline thus comes to the fore.
Check whether the return decision is compatible with your ties in Austria. The balancing exercise under Article 8 ECHR can play a role here as well.