Barcode Scanning in the Warehouse: A Setup Guide

If you're still picking from printed lists and typing quantities into a computer at the end of the day, barcode scanning is the single biggest upgrade you can make. It cuts errors, speeds up every movement and makes stock data trustworthy enough to rely on.

What gets a barcode

• Products. The manufacturer's EAN/UPC, or your own internal code
• Locations. Every bin, shelf and staging area
• Lots and serials, where you track them
• Packages and pallets, if you move goods in containers
• Documents. Pick lists, receipts and transfers, so a scanner can open them directly

Location barcodes are the ones people forget. Without them, the system knows what was picked but not from where.

GS1 standards, briefly

If you trade with large retailers or need lot and expiry data on labels, look at GS1:

• GTIN (EAN-13 / UPC-A) identifies the product
• GS1-128 labels can carry multiple fields in one barcode: GTIN, lot, expiry date, quantity
• SSCC identifies a logistics unit such as a pallet

Scanning one GS1-128 label can fill in product, lot and expiry at once, which saves a lot of keying on receipt. Odoo supports GS1 nomenclature in its barcode app.

Choosing scanners

Buy one or two devices first. Run them for two weeks with real pickers before ordering the rest.

Getting the ERP side right

Scanning only helps if the software flow is designed for it:

• Receipts. Scan the PO, scan each product, scan the destination location
• Putaway. The system suggests a location. The operator scans to confirm or override
• Picking. Scan the location, then the product, then confirm quantity
• Packing. Scan each item into the package to verify it
• Counting. Scan location, scan products, enter counts blind

In Odoo Enterprise, the Barcode app handles these flows. On Community, OCA modules provide barcode-driven operations, with some differences in interface.

Labels and printers

You'll need a thermal label printer for location labels, product labels and shipping labels. Use durable labels for locations. Paper labels on rack beams don't survive forklifts.

Print location labels in a consistent format, with the code in human-readable text as well as the barcode.

Rolling it out

1. Label and scan-enable one zone first
2. Train with the people who'll actually use it, on the floor, not in a meeting room
3. Run it in parallel with the old process for a few days
4. Fix the awkward steps the team points out
5. Roll out zone by zone

Expect pickers to be slower for the first week and faster from the second.

Beyond barcodes

Barcodes need line of sight and one scan per item. For high volumes, or tracking assets and returnable containers, RFID can go further. See RFID vs barcode and RFID integration with ERP.