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WMS (Warehouse Management System) enables the digital management of product, stock, location, and movement information within a warehouse. Using WMS in conjunction with barcode, QR code, and handheld terminal technologies helps to more quickly and accurately match physical warehouse movements with digital records.
In barcode-based warehouse management, products, shelves, pallets, boxes, and, where applicable, batch or serial numbers are identified with unique codes. Operators scan these codes during operations from receiving to shipping, transferring the movements to the WMS (Warehouse Management System). This reduces manual data entry, makes product movements traceable, and lowers the risk of errors in warehouse operations.
The Basic Structure of Barcoded Warehouse Management with WMS
1. Product Identification by Barcode
The first step in barcode-based warehouse management is identifying the products processed in the warehouse within the system. For each product, the product code, description, unit of measurement, product group, and barcode information can be recorded in the WMS. While the existing manufacturer's barcode can be used, custom barcodes can also be created for the business.
Identifying products by barcode allows operators to process items by scanning the barcode instead of manually typing the product code. This approach is particularly helpful in warehouses with similar products, reducing the risk of selecting the wrong item.
2. Barcoding of Warehouse Locations
In barcode-based warehouse management, it's important to identify not only products but also warehouse locations. Unique location codes can be generated for aisles, shelves, bins, pallet areas, or different warehouse zones, and barcode labels can be placed in these areas.
When placing a product at a location, the operator can scan both the product barcode and the shelf barcode. This process allows WMS to record the physical location of the product. When the product is later moved to another location, the system information can be updated using the same method.
3. Managing the Goods Receiving Process with Barcodes
Products received from the supplier can be entered into the system by scanning their barcodes at the warehouse entrance. After identifying the product code, WMS can record information such as the quantity received, supplier, purchase order, batch number, serial number, and expiration date.
During the goods receipt process, it can be checked whether the product matches the purchase order. Issues such as incorrect products, missing quantities, or unexpected materials can be detected at an earlier stage. Once the receipt process is complete, the product becomes visible in the stock.
4. Tracking Batch and Serial Numbers via Barcode
In industries such as pharmaceuticals, food, chemicals, electronics, and similar sectors, tracking a product solely by its product code may not be sufficient. Traceability based on batch, lot, or serial number may be required. This information can be carried on a barcode or QR code and read by the WMS.
Different batches of the same product can be managed as separate stocks. This allows for retrospective analysis of which batch is located where, how much remains, when it entered the warehouse, and which shipment or production process it was used in.
5. Barcode Verification of Product Placement
After receiving the goods, the products need to be placed in the appropriate warehouse locations. WMS can show the operator which location the product should be moved to. The operator can verify the placement by scanning the product and location barcodes.
This structure reduces the risk of misplacing the product on the wrong shelf. The system can suggest suitable locations based on product type, inventory turnover rate, temperature requirements, or warehouse regulations when needed.
How to Manage Daily Warehouse Operations with Barcoded WMS?
6. Using Barcodes for Intra-Warehouse Transfers
Products within the warehouse can be moved from one location to another according to operational needs. With barcode-based WMS technology, the operator can perform the transfer by first scanning the product barcode and then the target location barcode.
As a result of this process, the quantity of the product at the old location decreases, and the quantity at the new location is updated. The transfer history can be stored along with user and date information. This allows product movements to be tracked retrospectively.
7. Order Picking Process Control via Barcode
Order picking is one of the stages in warehouse operations where the risk of error is high. A WMS (Warehouse Management System) can show the operator which product to pick, from which location, and in what quantity. When the operator scans the product barcode, the system can check whether the correct product has been selected.
The system can issue a warning if the wrong product is scanned. This feature reduces the possibility of confusing products with similar packaging or product names, contributing to order accuracy.
8. Barcode Verification of Packaging and Shipping
When the collected products arrive at the packaging area, the barcodes can be re-scanned to check the order contents. WMS can compare the scanned products with the products and quantities that should be in the package. This reduces the risk of sending too many or too few products.
During shipment completion, product dispatch can be recorded by scanning the box, pallet, or order barcode. Stock levels are updated, and shipment history is stored in the system.
9. Inventory Counting Using Barcodes
Barcode-based warehouse management also simplifies inventory counting processes. The operator can go to a specific location, first scanning the location barcode, and then scanning the products in that area. Physical quantities can be entered into the system via a handheld terminal.
WMS can compare the counting results with the current system stock. If a discrepancy is found, the product or location with the deviation can be quickly identified. This allows for more controlled periodic and cycle counting processes.
10. Reporting Barcoded Transaction History
Barcode-based transactions on WMS can be recorded based on user, date, product, location, and transaction type. It is possible to retrospectively review which user accepted, transported, collected, or shipped which product.
This data can be used to investigate inventory discrepancies, measure operational performance, identify sources of error, and conduct process improvement studies. The barcode system thus supports not only transaction speed but also warehouse traceability.
What is Barcoded Warehouse Management?
Barcode-based warehouse management is a management model where warehouse elements such as products, locations, pallets, or boxes are identified by barcodes, and warehouse movements are transferred to the system via barcode readers or handheld terminals. When used with WMS (Warehouse Management System), it ensures that physical movements are matched with digital inventory records.
Is a barcode required to use WMS?
While barcodes are not always technically mandatory for WMS (Warehouse Management System) use, in warehouses with high product movement, barcode usage reduces manual data entry and improves transaction accuracy. Barcodes offer significant advantages, especially in operations requiring tracking based on product, location, batch, and serial number.
What is the difference between a barcode and a QR code?
Traditional barcodes typically carry a limited amount of information in the form of one-dimensional lines. QR codes, on the other hand, can store more data within a two-dimensional structure. From a WMS perspective, both technologies can be used to quickly scan product or location identification. The choice depends on the business's data and operational needs.
How does a handheld terminal work with WMS?
A handheld terminal is a mobile device that allows operators to scan barcodes and process transactions with the WMS (Warehouse Management System) while moving around the warehouse. Operations such as receiving, placing, transferring, picking, counting, and shipping can be performed from the handheld terminal screen. This allows transactions to be recorded in the field without returning to a desktop computer.
How does a barcoded WMS reduce inventory errors?
In barcode-based transactions, scanning the product code directly instead of manually typing it reduces the risk of selecting the wrong product. The use of location barcodes reduces the likelihood of placing products on the wrong shelf. Furthermore, thanks to controls defined in the system, alerts can be generated for unexpected product or quantity transactions.
Is batch tracking possible in barcode-based warehouse management?
Yes. Lot or batch information can be associated with barcodes. WMS can track different batches of the same product separately. This allows you to view stock quantity, location, receipt date, expiration date, and movement history on a batch basis.
Which systems can WMS integrate with?
WMS can integrate with enterprise systems such as ERP, EBR, QMS, and LIMS. Purchasing and sales information can be retrieved from ERP, raw materials to be used in production can be linked with EBR, the status of blocked or unsuitable stocks can be managed via QMS, and quality statuses can be linked with LIMS results.
WMS (Warehouse Management System) enables barcode-based warehouse management; it allows for the digital verification of all movements of products, from receiving and placement to in-warehouse transfers, order picking, inventory counting, and shipping. The combined use of product and location barcodes strengthens the link between the physical warehouse and system records.
The use of barcode, QR code, and handheld terminal technologies in conjunction with WMS contributes to increased inventory accuracy, traceability of product movements, reduction of manual processing costs, and more standardized warehouse operations. Especially in high-volume warehouses, a barcode-based WMS structure is a crucial component of digital warehouse management.
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