Lot and Expiration Tracking

Lot and expiration tracking is the practice of identifying each production batch (a "lot": the set of units manufactured under the same conditions, on the same day and with the same raw materials) and linking it to an expiration date that marks how long the product is fit for consumption or use. Together, these two pieces of data let you know what was produced, when, with which inputs and how long it is good for across the entire chain.

It is the most concrete operational piece of traceability: while traceability is the general principle of "following the trail," lot and expiration are the actionable codes printed on every case, pallet and unit. Without a properly recorded lot, a product withdrawal forces you to pull all the stock off the market; with the lot, you withdraw only the affected batch. Capturing that data and moving it without errors from end to end is part of what Trazzo automates.

In sectors such as food, beverages, pharma and cosmetics, lot and expiration control is not optional: it is a regulatory and health requirement, and the foundation of any serious product recall process.

What it solves in practice

Picture a dairy distributor in Buenos Aires that receives yogurt from three different plants. Each delivery note comes with batches that have different lots and expiration dates. If the warehouse does not control that data, two things go wrong: goods close to expiring are shipped to the customer while fresher stock sits at the back of the shelf, and when a quality problem comes up nobody knows which customers received which lot. Lot and expiration control tackles exactly those two fronts: correct inventory rotation and the ability to trace every unit.

How it works, step by step

The data is born at the plant, when a lot number is assigned to the batch and printed alongside the expiration date (often inside a barcode or a GS1 code with standard identifiers). From then on, the lot is captured by scanning at every movement: receiving into the warehouse, picking, order assembly and shipping. That way the system knows at all times which lot is in which location and which customer it was sent to. When a quality deviation shows up, you only need to look up the lot to trace backward (which inputs it came from) and forward (who it was delivered to).

Why it matters for the business

• Health and legal compliance: in food and pharma, without a recorded lot and expiration date you cannot sell or export.
• Surgical recalls: only the compromised batch is withdrawn, not the whole brand, reducing losses and reputational damage.
• Less shrinkage: rotating by expiration date keeps products from expiring on the shelf or in the warehouse.
• Channel trust: supermarkets and pharmacy distributors require the data as a condition of purchase.
• Defense against claims: when a complaint comes in, the lot proves what was produced, when and where.

Rotation rules: FEFO, FIFO and LIFO

The expiration date defines the order in which it makes sense to ship. This is the distinction that causes the most confusion:

For any product with an expiration date, the right rule is FEFO (First Expired, First Out): what matters is not when the goods came in, but when they expire. A classic mistake is applying FIFO out of habit and ending up shipping a lot that is older by receiving date but has a later expiration date, while the one that arrived afterward expires.

Common mistakes to avoid

• Recording the lot only on paper or in a standalone spreadsheet, not in the system, so a recall means going through delivery notes by hand.
• Confusing the production date with the expiration date, or mixing formats (DD/MM vs MM/DD) across suppliers.
• Not capturing the lot during picking, so the system knows something was shipped but not which batch.
• Treating the expiration date as a label detail rather than an operational rule that sets the shipping order.

How it differs from traceability in general

Traceability is the umbrella concept: the ability to follow a product across the entire chain. Lot and expiration are its smallest unit of record: the concrete identifier that makes that traceability possible. Put simply, there is no traceability without a properly captured lot, but the lot on its own (if it is not moved and looked up along the chain) is just a label. In regulated industries, this control goes deeper with serialization practices that identify each individual unit, not just the batch.

For a consumer goods, pharmaceutical or agribusiness company in Argentina, mastering lot and expiration tracking is the baseline that separates an operator that can answer "what, when and to whom" in minutes from one that takes days and risks penalties.