In so many fields of study i.e. Engineeering, IT, Medicine, Marketing or Communications, ect, they define qualification generally as an official requirement for the individual to be recognised to perform or execute duties such as management down to labour for example.
On the other hand,companies require skills e.g in mining engineering, someone with grade 1 who has operated a machine for ten years is valued the most than someone who recently certified as an operator for the same machine.