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A real lot trace

Pick a lot. See where it went.

This is the screen a recall comes down to: one lot, traced backward to the supplier who delivered it and forward to every customer who received something made from it. No login, no form, and nothing on this page needs JavaScript.

Sample data. The suppliers, customers and lot numbers below are a worked example, not a real customer’s records. The trace itself is computed by the same code the product runs.

  • Received from Volailles Richelieu PO-4471 · 2026-03-02 · signed M. Tremblay
  • The lot LOT-CHKN-4471 Cooked chicken breast
  • Sub-recipe Chicken filling SR-CHKN-FILL · the step a spreadsheet loses
  • Production run Sandwich production 2026-03-06 PRD-9021
  • Production run Wrap production 2026-03-06 PRD-9022
  • Finished lot LOT-FG-SW-01 Chicken sandwich
  • Finished lot LOT-FG-WR-01 Chicken wrap
  • Shipped to Couche-Tard SHP-7001 · 2026-03-07 · LOT-FG-SW-01
  • Shipped to Air Canada SHP-7002 · 2026-03-08 · LOT-FG-WR-01
  • Shipped to IGA Extra Beauport SHP-7003 · 2026-03-08 · LOT-FG-SW-01

13 records · 3 customers · Customers to call: Couche-Tard, Air Canada, IGA Extra Beauport

  • Received from Boulangerie Ste-Foy PO-4492 · 2026-03-04 · signed S. Gagnon
  • The lot LOT-BUN-4492 Sandwich bun
  • Production run Sandwich production 2026-03-06 PRD-9021
  • Finished lot LOT-FG-SW-01 Chicken sandwich
  • Shipped to Couche-Tard SHP-7001 · 2026-03-07 · LOT-FG-SW-01
  • Shipped to IGA Extra Beauport SHP-7003 · 2026-03-08 · LOT-FG-SW-01

8 records · 2 customers · Customers to call: Couche-Tard, IGA Extra Beauport

  • Received from Ferme Bélanger PO-4490 · 2026-03-04 · signed S. Gagnon
  • The lot LOT-CHEESE-4490 Cheddar slices
  • Consumed by Nothing This lot was received and never used in production. No finished goods, no shipments, no customers to call.

2 records · 0 customers · No customer received anything made from this lot.

The third lot is the one worth looking at. It was received and never used, so it traces to nothing — no finished goods, no shipments, nobody to call. A trace that cannot tell you that is just an alarm.

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