When a complaint arrives, the question of "which party did it come from" gets lost in the ledger, and recall hours tick away in vain. Lot traceability in food is established at the moment of production, not during a crisis.
Raw material lot, production lot, expiration date, and shipment tie are the same chain. When one link breaks, the entire recall becomes unreliable.
In this article, we discussed end-to-end lot traceability and recall readiness in food production.
Table of Contents
Why is it mandatory?
Lot traceability is not only a legal expectation but also a requirement of customers and retail chains. An "I remember" answer never suffices during an audit requiring documentation.
EQLEM is a solution platform; it works alongside your existing ERP/system and completes food operation records. The goal is not to change the financial system, but to make the chain visible.
A narrowed-down recall protects the brand and cost; without a lot, all stock is considered suspicious. A broad recall is expensive, slow, and damages reputation.
Forward and backward traceability must be established together. Looking only inward or only outward leaves you stranded in the middle of a crisis.
Therefore, the lot is a natural part of the production slip and shipment. A label and ledger added afterwards leave gaps and delays.
Raw material lot entry
During goods receipt, the supplier lot, quantity, and expiration date must be recorded together. Incomplete acceptance breaks the chain from the start.
When generating an internal lot number, keep the supplier lot as a reference. A dual number builds a bridge during an audit.
Do not combine mixed lots in the same box; mixing broadens the recall. A separate lot means a narrow scope.
The rejected batch must be quarantined and separated from production stock. A mixed shelf means mixed risk.
We explained the basis of lots in the batch lot tracking article.
Creation of production lot
The production slip links which raw material lots went into which finished product lot. This link is the heart of traceability.
Multiple raw material lots can enter a single finished product lot; all must be recorded. A missing line means an incomplete recall list.
Opening a new lot during cleaning or changeovers narrows down cross-contamination. The same lot number pools the risk.
Scrap and reworked products must also be recorded while maintaining the lot link. Rework may carry new risk.
We covered the flow of slips in the production slip article.
Expiration date and FEFO
The expiration date or best-before date is part of the lot record and should not be left on the label alone. A date not in the system cannot be managed.
FEFO (first expiring, first out) shipping reduces spoilage. FIFO alone may not be sufficient for food.
The list of approaching expiration dates should be checked daily. Late realization means waste or customer complaints.
Blocked lots must not be made available for shipping; they are released only after quality approval. An automatic block cuts out human error.
We discussed warehouse locations in the warehouse groups article.
Recall flow
A recall lists which customers and shipments the suspicious lot went to within minutes. If the list is slow, the recall expands.
Forward tracing goes from the finished product lot to the customer, and backward tracing goes from the customer or complaint to the raw material. Both directions must be tested.
Conduct a recall drill at least once a year; a crisis moment should not be the first trial. Drills reveal gaps.
Recalled lots must be blocked, and the return acceptance process must be ready. Unblocked stock gets resold by mistake.
Strengthen the shipment link shipment preparation with the article.
Record and label discipline
The label and system record must carry the same lot number; hand-written discrepancies fail during audits. A single number is a single reality.
Reading via barcode or QR code reduces typing errors. Manual entry is the most frequent point of failure.
The status of open lots must be left clear during shift handovers. A half-finished record turns into morning chaos.
Document retention periods must be defined according to legal and customer requirements. A deleted record is a deleted defense.
You can compare the assembly and serial requirement in the traceability in assembly production article.
Audit preparation
The auditor selects a random lot and asks for the chain; the answer must appear on the screen within minutes. Hours of searching is a sign of a lack of system.
Associate the supplier certificate and analysis report with the lot. A document pool is useless if disconnected from the lot link.
Corrective and preventive action records must be linked to the lot event. A CAPA without a link hides recurring problems.
Segregation of duties is important; not everyone should be able to lift a lot block. Uncontrolled release ends control.
We discussed the permission setup in the user permissions article.
Setup steps
First, enable the lot requirement for critical raw materials; forcing it on all cards at once slows things down. Phased rollout builds habits.
In the second step, make the lot link mandatory on production slips. A lot without a slip is a broken chain.
In the third step, mandate the finished product lot in shipments. Recalls remain incomplete without customer linkage.
In the fourth step, conduct a drill and measure the duration. If the duration is long, the process or data is flawed.
Records in the production module is linked to stock movements.
Points to watch out for
Leaving the lot number as free text generates duplicate and erroneous entries. Format rules and, if possible, barcodes are mandatory.
Keeping a parallel lot ledger in Excel leads to debates during a crisis over which record is correct. Choose a single source and close the other.
Do not sever the lot connection for materials sent out to subcontracting; external processes are also part of the chain. Disconnected subcontracting means a disconnected and broad recall.
Selling an expired lot 'a little longer' discredits the entire system. Block rules must not be stretched, and exceptions must be logged.
Verify that the lot field is transferred in document matching with the current ERP/system. A lot that is not transferred gets lost in reports and audits.
What changes in practice?
In case of a complaint, the relevant lot and customer list are generated within minutes. Broad and panic-driven recalls decrease.
Audit questions are answered directly from the screen; the hunt for files ends. Preparation gains credibility.
FEFO shipping reduces waste and customer complaints regarding expiration dates. Date management is part of stock management.
Supplier lot performance becomes visible; repeatedly problematic batches are filtered out. Data strengthens procurement decisions.
For lot preservation on the subcontracting side, subcontracted production tracking read the article.
Frequently asked questions
Is a lot mandatory for every product?
It is practically mandatory for food and critical inputs; for low-risk products, it can be implemented gradually.
Is a serial number also required?
A lot is sufficient for most food products; devices/assemblies require a serial number — serial number tracking see the article.
Is a recall drill mandatory?
It is mandatory; a system without drills is being tested for the very first time during a crisis.
Do we need to change the current system?
No need; EQLEM complements lot and production logging alongside your existing ERP/system.
In food production, lot traceability is established on daily slips, not at the moment of a recall. The chain must not be broken from reception to shipment.
Link the raw material and finished product lot on the slip; keep the BBD (Best Before Date) in the system. The date left on the label cannot be managed.
Do not bend FEFO and block rules; a shortcut produces a long crisis. Discipline protects the brand.
Conduct drills and measure the duration; a slow list means a wider recall. Speed is the proof of preparation.
Let the platform display the operational lot while the existing ERP/system carries the financial record. Working side by side is the lowest-risk path.
By consulting with the EQLEM team, you can clarify your lot traceability scope.