Where one legal entity owns products from certified and noncertified production in parallel (parallel ownership), every product from certified processes packed in final consumer packaging, on the farm or after handling, carries a GGN: the group's GGN, the member's GGN, both, or the individual producer's GGN; the GGN is never used to label noncertified product.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.