Section

Traceability

How a printed code and a lot record have to point at the same batch.

Plain cartons with blank white labels on a wooden pallet

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The page assigns roles for the mark and the lot file. Confirm the code format in the traceability rule that applies to the product.

Coding and lot records separates the mark on the pack from the record that says what the mark means. Lot number tracking and 4-hour mock recalls links raw ingredients, film roll splices, MAP gas lots, and customer BOLs in a 100% mass-balance ledger. Date codes on packs: contrast, rub test and placement verifies substrate contrast, condensation and oil rub survival, 90-degree tape-pull adhesion, and 8 mm seam clearance.