SamleB, are you sure you were a chef? Maybe you were a cook? Chef title requires MUCH more experience, I believe you might of been a cook. Look at the differences between the two nocs:
Chef:
- Plan and direct food preparation and cooking activities of several restaurants in an establishment, restaurant chains, hospitals or other establishments with food services
- Consult with clients regarding weddings, banquets and specialty functions
- Plan menus and ensure food meets quality standards
And Cook:
Prepare and cook complete meals or individual dishes and foods
Prepare and cook special meals for patients as instructed by dietitian or chef
Schedule and supervise kitchen helpers
The VO said "According to your letter of employment, your duties include full perparation work in the kitchen, cooking all food orders and managing kitchen staff. This does not correspond to the lead statement and a substantial number of the main duties contained in NOC 6321, chef"
These duties are under the noc cook however, you just picked the wrong noc.
Did you actually perform chef duties? I find it hard to believe you did since chefs are mainly more experienced, while cook is a stepping stone before chefs usually. You should reapply.