Fresh pre-packed package item differs in weight.
Where a fresh food pre-packed package item differs in weight, is sold by weight but ordered by specific separate pack size a new / unique GTIN will be assigned to each type of pack size.
Pre-packaged chicken drumsticks, each package differs in weight, sold by weight but ordered by specific pack size (GTIN A = 10pk and GTIN B = 14pk)
Consequence if rule not applied: GTIN assignment would be inaccurate