Simplifying Serial Numbers, Lot Numbers, and Batch Numbers

simplifying serial numbers, lot numbers, and batch numbers
Decoding what serial numbers, lot numbers, and batch numbers mean for your warehouse and business practices.
Written by Amanda
July 7, 2023
4 min read


Decoding what serial numbers, lot numbers, and batch numbers mean for your warehouse and business practices.
Written by Amanda
July 7, 2023
4 min read

The concept of traceability in the supply chain is as crucial as it is complex. Unique identifiers such as lot numbers, batch numbers, and serial numbers are the backbone of this traceability, facilitating accurate tracking and management of products. Despite their shared goal, these identifiers represent distinct concepts.

In this discussion, we’ll delve into the specifics of these identifiers, focusing on lot numbers, serial numbers, and batch numbers, their purpose in supply chain management, and how a sophisticated warehouse management system (WMS) like Shipedge can aid in this critical aspect of operations.

Understanding Lot Numbers

Lot numbers represent an entire batch or group of products that are produced or expire together. If a product is recalled, the lot number allows for precise identification of all items from the same batch that could potentially share the same issue. This system provides a balance between traceability and efficiency. However, while a lot number can tell you which products were manufactured under the same conditions, it can’t specify individual units within that lot.

The value of lot numbers becomes evident in industries like pharmaceuticals and food and beverage, where a defect or contamination in one batch could potentially affect the entire lot. In these cases, the lot number can save valuable time and resources in tracking the origin of a problem and implementing necessary recall procedures.

In Shipedge’s system, lot numbers are designated in the order management system (OMS) when creating a replenishment. The WMS will receive the replenishment with the lot already attached. These identifiers are then used throughout warehouse operations, providing visibility and traceability for inventory management.

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Decoding Serial Numbers

While lot numbers offer a collective identity to a batch of products, serial numbers provide a unique identity to each individual unit within a batch. In other words, every single product will have a distinct serial number, allowing for extremely precise tracking. This type of identification is commonly used for high-value or warranty items, such as electronics, machinery, or automobiles.

It’s important for warehouses to have the ability to keep a chain of custody when dealing with serialized products. Serial number tracking histories are stored in the WMS to help warehouse managers ensure that products remain compliant with industry-specific requirements such as manufacturing date, shipping, repairs or maintenance, returns, and movement inbound or outbound.

With Shipedge, you can create serial numbers when receiving a replenishment. The system then maintains these serial numbers, allowing for precise tracking of each unit through receiving, picking, packing, and shipping stages.

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Lot Numbers vs. Serial Numbers: The Key Differences

While both lot numbers and serial numbers play crucial roles in product traceability, the key difference lies in their level of specificity. Lot numbers are more efficient, allowing a large group of items to be tracked collectively. This is sufficient for industries where items from the same batch are virtually identical. On the other hand, serial numbers provide item-level traceability, crucial for high-value or warranty-bound products.

Lot numbers and serial numbers also differ in their recall efficiency. A problem with a specific lot can be identified quickly using the lot number, allowing for a swift and efficient recall. Conversely, serial numbers are useful when problems are specific to an individual unit and not a collective defect.

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Why Tracking Lot and Serial Numbers Matter

Precise tracking of lot and serial numbers is an essential component of modern supply chain management. This tracking aids in:

  • Efficient Recall Procedures: Quick and accurate recalls can save businesses significant time and money, minimizing damage to the brand’s reputation.
  • Better Inventory Management: Accurate tracking helps maintain optimum inventory levels, reducing instances of overstocking or stockouts.
  • Improved Customer Satisfaction: Accurate product tracking leads to better service, timely delivery, and an improved customer experience.
  • Compliant With Regulatory Requirements: For many industries, tracking lot and serial numbers isn’t just good practice – it’s a regulatory requirement.

Leveraging a robust warehouse management system like Shipedge simplifies the process of assigning and tracking lot and serial numbers. With a system that’s purpose-built to accommodate these unique identifiers, your business can reap the rewards of precise tracking, leading to operational efficiencies and a more streamlined supply chain.

Demystifying Batch Numbers

In understanding identifiers like lot numbers and serial numbers, one cannot overlook the importance of batch numbers. A batch can be defined as a specific quantity of a product that is manufactured or produced under identical conditions. Like a lot, a batch shares common properties, making it a group of similar products.

Batch numbers assign an identifier to these groups, which becomes especially useful in quality control. For instance, if a defect is identified in a particular batch of products, the batch number allows companies to isolate the problematic group without affecting the entire inventory.

It’s important to note that batch numbers and lot numbers often overlap in their functionality and are sometimes used interchangeably. However, there can be distinctions between them based on industry or company-specific practices. For example, in some settings, a lot might contain multiple batches. This typically happens when the same product is manufactured in different shifts within the same day or over multiple days. Each shift’s production might be considered a separate ‘batch’, but they might collectively be identified under the same ‘lot’ if the conditions are deemed consistent enough.

To maintain consistency, batch numbers should be created in processing. Shipedge’s WMS will do this for you.

How Batch Numbers, Lot Numbers, and Serial Numbers Work Together

Batch numbers, lot numbers, and serial numbers serve as unique identifiers in the supply chain, each catering to different levels of product grouping. Batch and lot numbers typically apply to a collective group of products manufactured under identical conditions, allowing for efficient tracking and recall procedures.

On the other hand, serial numbers apply to individual units within a batch or lot, providing an unparalleled level of detail in tracking. While a batch or lot number can give you a broad picture of where and when a group of products was manufactured, a serial number can tell you the specific journey of a single product unit.

These identifiers work together to create a robust traceability system. The serial number gives a granular view, the batch number provides a moderate level of detail, and the lot number provides a macro view. This combination ensures that whether you’re tracking a single high-value item or recalling a group of products, you have the precise tools at your disposal.

Understanding and leveraging these identifiers is easier and more efficient with a sophisticated system like Shipedge. The software helps manage these identifiers seamlessly, providing an effortless way to meet regulatory requirements and maintain high customer satisfaction.


As we’ve discussed, lot numbers and serial numbers provide unique benefits and play crucial roles in traceability and inventory management. By understanding the importance of these identifiers and employing systems like Shipedge that effectively manage them, businesses can ensure accuracy, efficiency, and customer satisfaction in their operations. As supply chains become more complex, these identifiers will only grow in importance, making their proper management essential to the success of modern operations.

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