--- title: "Serial Number and Lot Tracking: Traceability That Keeps Your Business Compliant" date: "2026-03-08" description: "Serial number and lot tracking in your WMS provides full product traceability for recalls, compliance, warranty claims, and quality control." author: "CannonWMS Team" tags: "Serial Tracking, Lot Tracking, Compliance, Traceability, Quality Control" draft: "false" --- # Serial Number and Lot Tracking: Traceability That Keeps Your Business Compliant If you're selling products that require traceability — electronics, food, supplements, cosmetics, medical devices, automotive parts, or anything with a warranty — you need more than just inventory counts. You need to know the history of every individual unit: where it came from, when it arrived, where it was stored, and who it was shipped to. Serial number and lot tracking in your WMS makes this possible without spreadsheets, manual logs, or separate tracking systems. ## When You Need Serial Tracking vs. Lot Tracking These two features solve related but different problems: ### Serial Number Tracking Every individual unit gets a unique identifier. You track each unit independently through its entire lifecycle. **Use this when:** - Products have manufacturer serial numbers (electronics, appliances, machinery) - You need to trace specific units for warranty claims - Regulatory requirements mandate unit-level tracking (medical devices under FDA UDI) - High-value items need theft/loss accountability - You do repairs or refurbishment and need to track each unit's service history **Example:** You sell industrial printers. Each printer has a serial number assigned at the factory. When a customer calls with a warranty claim, you pull up that serial number and see: when you received it, which lot it was part of, when it shipped, to whom, and any QC notes from inspection. ### Lot (Batch) Tracking Groups of units produced or received together share a lot number. You track at the batch level rather than the individual unit. **Use this when:** - Products are manufactured in batches (food, supplements, chemicals, cosmetics) - Expiration dates apply to a batch, not individual units - Recall scenarios require pulling all units from a specific production run - You need FIFO (first-in, first-out) or FEFO (first-expired, first-out) inventory rotation - Regulatory requirements mandate batch-level tracking (FDA, EU food safety regulations) **Example:** You distribute nutritional supplements. Each production run gets a lot number. If a quality issue is discovered, you can identify every unit from that lot — which ones are still in your warehouse, which ones shipped, and to which customers. ### Using Both Together Many operations need both. A medical device might have a unique serial number AND belong to a production lot. An electronic component might have a serial number for warranty tracking and a lot number for batch recalls. Your WMS should support both simultaneously on the same item. ## What Traceability Actually Looks Like in a WMS ### At Receiving When inventory arrives, your receiving team captures serial numbers or lot information as part of the standard receiving workflow: - **Scan or enter serial numbers** for each unit as it's received against a purchase order - **Assign lot numbers** to the incoming batch (or use the manufacturer's lot number) - **Record expiration dates** for lot-tracked items - **Link to the vendor and PO** so you can trace back to the supplier This takes seconds per item with barcode scanning. The serial or lot number is now attached to that inventory unit for its entire lifecycle in your system. ### In Storage Serial and lot information follows the item to its storage location: - **FEFO/FIFO enforcement** — the system directs picks to the oldest lot or earliest expiration first, so you're not shipping items that expire in 30 days when you have stock that expires in 6 months - **Lot segregation** — store different lots in different bins if required for compliance - **Quarantine support** — hold specific lots or serial numbers from being picked if there's a quality concern ### During Picking and Packing When an order is picked: - **Serial tracked items** — the picker scans the specific serial number when pulling the item. The system records which serial number is going to which customer. - **Lot tracked items** — the system directs the picker to the correct lot (usually the oldest or nearest expiration). The lot number is recorded against the order. - **Verification at pack** — the packer re-scans to confirm the correct serial or lot is in the box. ### At Shipping The shipment record includes: - All serial numbers included in the package - All lot numbers included in the package - The customer's order information If the customer ever needs warranty service, you can look up what serial number they received. If a lot recall happens, you can look up every customer who received items from that lot. ### On Return When a customer returns a serial-tracked item: - The serial number is scanned at receiving - The system matches it to the original outbound shipment - The item's history shows: received on X date, shipped to Y customer on Z date, returned on W date - The unit can be inspected, graded, and either restocked (maintaining its serial history) or written off ## Recall Scenarios: Why This Matters Recalls are the highest-stakes moment for traceability. Without lot tracking, a recall is a nightmare: **Without lot tracking:** - You discover a quality issue with supplements produced on March 3 - You have no way to identify which units in your warehouse are from that production run - You have no way to identify which customers received units from that run - You either recall everything (massively expensive) or recall nothing and hope for the best (massively risky) **With lot tracking:** - You discover the same quality issue - You query the system: "Show me all units from Lot #2026-0303" - The system returns: 450 units still in warehouse (bins A3-A7), 1,200 units shipped to 380 customers - You quarantine the 450 warehouse units immediately (removed from available inventory) - You generate a list of 380 affected customers with order numbers, quantities, and shipping addresses - You initiate targeted outreach to affected customers only The difference between a $500,000 blanket recall and a $50,000 targeted recall is lot tracking. ## Compliance Requirements by Industry Different industries have different traceability mandates: ### Food and Beverage - **FDA FSMA (Food Safety Modernization Act)** requires one-up, one-back traceability — you must be able to trace where you got it and where it went - **Lot numbers and expiration dates** are mandatory - **FEFO rotation** required to prevent shipping expired product - Future requirements under the FSMA 204(d) rule will require even more granular traceability for high-risk foods ### Supplements and Nutraceuticals - **FDA 21 CFR Part 111** (cGMP) requires lot tracking throughout manufacturing and distribution - Each finished product lot must be traceable to its component lots - Retention of lot records for 1 year beyond shelf life or 2 years beyond distribution ### Medical Devices - **FDA UDI (Unique Device Identification)** requires unique identifiers on all devices - Serial-level tracking for Class III devices and implants - Lot-level tracking for Class II devices - Distribution records must link device identifiers to customers ### Electronics and Consumer Products - **Warranty tracking** — serial numbers link to purchase dates and warranty terms - **Product safety recalls** (CPSC) require the ability to identify affected units - **RoHS/REACH compliance** — lot tracking for materials compliance documentation ### Automotive - **IATF 16949** requires full traceability for automotive parts - Serial tracking for safety-critical components - Lot tracking for batch-manufactured parts ## FIFO vs. FEFO: Getting Rotation Right Lot tracking enables proper inventory rotation: **FIFO (First-In, First-Out):** Pick the oldest stock first, regardless of expiration date. Used for non-perishable goods where you want to avoid old stock accumulating. **FEFO (First-Expired, First-Out):** Pick the stock with the nearest expiration date first. Used for perishable goods, supplements, cosmetics — anything with a shelf life. Without lot tracking in your WMS, rotation depends on your warehouse team manually checking dates. With lot tracking, the system automatically directs picks to the correct lot. ## What to Look for in a WMS If traceability matters for your products, your WMS needs: - **Serial number capture at receiving** with barcode scanning - **Lot number assignment** with expiration date tracking - **Both serial and lot tracking on the same item** for products that need both - **FIFO/FEFO enforcement** in pick tour generation - **Lot quarantine** — ability to hold specific lots from fulfillment - **Forward and backward trace** — given a lot, find all customers; given a customer, find all lots - **Integration with receiving and shipping** — serial/lot captured at inbound, recorded at outbound - **Reporting** — lot aging, expiration alerts, serial number search, traceability audit reports ## The Bottom Line Serial and lot tracking isn't just a compliance checkbox. It's the infrastructure that lets you respond to quality issues in hours instead of weeks, fulfill warranty claims accurately, rotate inventory properly, and maintain the traceability records that regulators and customers expect. CannonWMS supports per-item serial numbers and lot management with barcode scanning at every stage — receiving, putaway, picking, packing, and shipping. Track individual units or entire batches through your warehouse with full audit trails. --- **Need traceability in your warehouse?** [Build your price](/pricing) or [talk to our team](/contact-us) about serial and lot tracking for your products.