score:1
None! You do not need any visa to go to UAE for 1 day. You get 90 days on arrival as a German citizen.
You're probably providing incorrect input to Timatic. To me Timatic says this for your itinerary.
Transit - United Arab Emirates (AE)
Visa
Visa required.
Visa Exemptions:
Nationals of Germany with a normal passport for a maximum stay of 90 days.