Which document allows you to park here?

Your answer is completely correct because this parking sign combined with the wheelchair symbol indicates a parking space reserved for people with severe disabilities. According to German traffic rules, parking is allowed only if you have either your own EU parking card for people with severe disabilities or the EU parking card of a severely disabled person you are transporting. A residential parking permit does not grant the right to park in these special spaces. This rule ensures that parking spaces remain available for those who genuinely need closer and more accessible parking due to mobility issues.