IF you cannot find any reference to your 'missing part' - eg Left Wing Detached - then that deviation is not allowed & dispatch not possible until rectification complete.
and therein lays one of your problems, because that simply is not true. The MEl/CDL/DDG does not cover everything, just because its not in there does not mean you can not fly.
Here's one, B744 - brake unit has 2 wear indicators, on your walkaround you find 1 missing, it's not in the MEL/CDL/DDG, can you depart without having to lock out or replace the brake, after all it's not in the DDG?