This question already has an answer here:
i applied with my parents to Germany. my dad got the visa while me and mum got the following: One or more member states are of the believe that you are a threat to the public order, the internal security, public health according to Arrocle 2 No 21 of the Resolution (EC) Nr. 2016/ 399 (Schengen Border Kodex) or to the international relations of one or more member states.
Any idea what that is or if it allows me to reapply? we always received Schengen visa together.