SSCC and the GS1-128 Barcode

Traceability is a key part of distribution, often relying on the barcodes you see on boxes, pallets, or entire containers. One of the most important of these is the SSCC. It's a powerful tool for identifying shipments and ensuring smooth movement through warehouses, logistics hubs, and transport networks.

In the following sections, we'll examine how the code works, how it differs from other identifiers like GTIN, and the barcodes that bring it to life. Lastly, Can the 2d barcode replace them in the future?

What is an SSCC?

The Serial Shipping Container Code (SSCC) is a unique 18-digit identifier that tracks shipments. Think of it as a digital fingerprint for boxes, pallets, or containers, ensuring every unit is distinguishable.

The following components make up the shipment code:

1. Extension digit (1 digit)

The extension digit is the first number in the code. It gives companies more options to create unique codes. It doesn't have a set meaning and can be used however the company decides, such as to separate different shipments or categories. 

The extension digit allows companies to utilize the shipping code for various internal tracking and operational needs beyond basic shipment identification.

2. GS1 company prefix (7-10 digits)

The GS1 Company Prefix is a unique number given to a company by GS1. It works like an ID, linking the codes to the company that made them. 

Big companies get shorter prefixes to create more codes, while smaller companies get longer prefixes because they need fewer codes.

3. Serial reference (6-9 digits)

This part is a unique identifier the company chooses to identify each shipment. It's often called a Shipping Reference Number or Waybill Number. 

The length and format of this number can vary greatly depending on the company's system. For example, a company might use a 10-digit alphanumeric or 15-digit numerical code. 

Each shipment, whether a single box or a full truckload, receives its unique reference number.

4. Check digit (1 digit)

Check digits are like safety checks for codes. They help catch mistakes, like typing errors or scanning problems. 

The check digit is usually the last number in the code and is worked out using a math formula based on the other numbers. The formula can be different depending on the type of code, like an ISBN or UPC. 

When the code is scanned or typed, the system rechecks the math. If the check digit doesn't match, there might be a mistake in the code.

Difference to GTIN

Unlike the Serial Shipment Container Code, the GTIN uniquely identifies individual trade items, such as a box of cereal or a bottle of shampoo. It helps businesses manage retail sales, inventory, and B2B transactions.

Use case for each code

• Manufacturers, stockers, and retailers scan GTINs when individual items are made, stored, or sold at the point of sale. Businesses use this code to add a single product to inventory, place it on a retail shelf, or scan it at checkout.
• Shipment codes are used at the logistics level. Workers scan them when assembling shipments, tracking them through warehouses, loading them onto trucks, or receiving them at a distribution center. For instance, an SSCC 18 identifies a pallet moving from a factory to a retailer's storage facility.

GTINs handle product-level identification, ensuring accountability for each item at its most granular level. On the other hand, shipment codes streamline the movement and tracking of grouped items through distribution channels. 

Together, they enable complete traceability from production to delivery, connecting product-level and shipment-level data seamlessly.

The GS1-128

When it comes to tracking shipments, the GS1-128 barcode is the gold standard for encoding the shipment code. It's specifically designed for logistics demands, making it the go-to choice for businesses that need to track and manage shipments efficiently.

The GS1-128 barcode is a versatile tool in the supply chain network. Here's what makes it effective:

Application Identifiers (AIs): These prefixes tell scanners what kind of data they're reading. The SSCC uses the AI 00, marking it as a logistics unit identifier.

Readable by Humans: The shipping code is printed below the barcode in plain text, making it easy to double-check the code manually if needed.

Can Do More: It's not limited to shipment codes—it can include other details like batch numbers or expiration dates when necessary.

Can the GS1 QR code replace GS1-128?

The coming transition to 2D barcodes for POS in 2027 has sparked questions about the future of logistics barcodes. Let's see if the GS1 QR code can truly replace GS1 128. 

Capabilities of QR codes

The 2D barcode has unique advantages like:

Compact Data Storage: It can hold more information than GS1-128 in a smaller space, including text, URLs, and additional supply chain data.

Resilient to Damage: QR codes have built-in error correction, allowing them to still be read accurately even if part of the code is damaged.

Versatility: QR codes work well for digital applications, allowing links to websites, product information, or instructions.

Omnidirectional Scanning: You can scan from any angle, not just one specific direction. This makes it much quicker and easier, especially in a hurry.

Challenges of Replacing GS1-128

Despite its strengths, the QR code is not a quick shoe-in replacement. Logistics companies may hesitate to adopt them due to: 

Scanning Environments: GS1-128 barcodes are optimized for long-distance scanning in warehouses and shipping hubs. QR codes typically require closer-range scanners, which can slow down operations in large facilities.

The existence of long-range QR code scanners like the XB-6266MB may mitigate this disadvantage. However, environmental conditions (lighting, obstructions) and QR code quality can still significantly impact the effective scanning distance.

Adoption Rates: Many supply chain systems and scanning technologies are built around GS1-128. Switching to QR codes would require significant investment and system updates.

Global Standardization: GS1-128 is deeply ingrained in international logistics, with standardized practices ensuring compatibility across industries. While GS1 QR codes are gaining traction, they're not yet universally adopted for logistics.

The practical path for now

The SSCC, supported by the GS1-128 barcode, remains a vital tool for logistics and supply chain management. Its proven reliability and compatibility with global systems make it the preferred method for tracking shipments across warehouses, trucks, and distribution centers.

As the industry prepares for the shift to 2D barcodes at POS by 2027, it’s worth exploring whether SSCCs encoded in GS1 QR codes can meet the demanding requirements of logistics environments. 

For now, though, SSCC and GS1-128 continue to provide the reliability and traceability that businesses depend on to keep goods moving efficiently.

DISCLAIMER: We acknowledge that GS1, as well as the materials, proprietary items, and all related patents, copyright, trademark, and other intellectual property (collectively, “intellectual property”) relating to its use, are the property of GS1 Global, and that our use of the same shall be in accordance with the conditions provided by GS1 Global.