Views: 222 Author: Loretta Publish Time: 2026-02-07 Origin: Site
Content Menu
● Key GS1 Identification Codes You Should Know
● GS1 Logistic Labels and the Role of SSCC
● Labeling Trade Items: Cartons and Outer Cases
● Format of Data and Application Identifiers (AIs)
● Human‑Readable vs Machine‑Readable Layouts
● Core GS1 Label Requirements for Products and Logistics
● Why GS1 Labels Matter to You
● Industry‑Specific GS1 Label Expectations
>> Pharmaceuticals and Healthcare
● Practical Steps to Implement GS1 Labels in Your Operations
● Common Mistakes and How to Avoid Them
● Actionable Best Practices Table for GS1 Labels
● How Carton Packaging and OEM Machinery Suppliers Can Add Value
● Call to Action: Make Your Packaging GS1‑Ready
● FAQs About GS1 Label Requirements
>> 1. Do I really need a GS1 label for every product?
>> 2. What is the difference between a product barcode and a GS1 logistic label?
>> 3. How do I get a GS1 Company Prefix?
>> 4. Can I reuse SSCCs for different pallets?
>> 5. What happens if my barcode quality is poor?
GS1 label requirements create a common language for identifying, tracking, and tracing products across global supply chains, from factories to retail shelves. For overseas brands, wholesalers, and OEM manufacturers using carton packaging, understanding GS1 labels is essential for compliance, operational efficiency, and smooth cross‑border logistics.
The GS1 system is the most widely used global standard for product identification and barcoding in supply chains. It defines how products, cartons, pallets, locations, and shipments are uniquely identified and encoded in barcodes and labels that can be read anywhere in the world.
At its core, the GS1 system covers three key aspects:
- Identification: Assigning unique numbers such as GTIN, SSCC, and GLN.
- Capture: Encoding these numbers and related data in barcodes or 2D codes.
- Share: Exchanging data between partners so that movements and events are traceable.
For carton packaging manufacturers and OEM suppliers, aligning your packaging design and printing processes with GS1 standards helps your customers avoid relabeling, customs delays, and retailer rejections.
Several GS1 identification keys appear on product and logistics labels. Understanding them will help you design and print labels correctly on cartons and outer cases.
- GTIN (Global Trade Item Number):
Identifies a trade item that can be priced, ordered, or invoiced, such as a single product unit, an inner carton, or an outer case.
- SSCC (Serial Shipping Container Code):
Identifies a logistic unit such as a pallet, mixed carton, or shipment that needs to be tracked through the supply chain.
- GLN (Global Location Number):
Identifies a company or physical location such as a warehouse, factory, or ship‑to address.
- Batch or Lot Number and Expiration Date:
Provide traceability and shelf‑life information, especially important for food, pharma, and regulated products.
When these identifiers are correctly combined in barcodes and human‑readable text, they form a complete GS1 label that both people and machines can interpret.
A logistic unit is any item assembled for transport or storage that needs to be managed as a single entity in the supply chain. This can be a single box, a master carton, a shrink‑wrapped bundle, or a pallet with mixed products.
Typical examples of logistic units include:
- One carton containing multiple pieces of the same product.
- A mixed carton with several SKUs for a specific customer order.
- A pallet carrying multiple cartons or layers of products.
Each logistic unit is uniquely identified with an SSCC so that systems can track its journey from the factory to the final destination.
The GS1 logistic label is designed to identify and track logistic units through every step of handling, storage, and transport. The SSCC is the core element of this label.
- It provides a unique serial number for each shipping unit worldwide.
- It connects physical movement to electronic business messages such as dispatch advice and advance shipping notices.
- It enables scanning at inbound, outbound, and cross‑dock points, reducing manual data entry errors.
If a logistic label's barcode does not contain an SSCC, it is not considered a GS1 logistic label, even if other data like GTIN or batch numbers are present.
Trade items include any products or packages that are priced, ordered, or invoiced. For carton packaging and outer cases, barcodes typically encode a GTIN to identify the product or case configuration.
Key points for labeling trade items:
- Each sellable unit requires its own GTIN.
- Inner cartons or multipacks may have different GTINs from individual units.
- Outer cases used for distribution can also carry GTINs, especially when scanned in warehouses.
If the label on a carton is intended to function as a GS1 logistic label, it must include an SSCC in addition to any GTINs or other data.
GS1 uses Application Identifiers, or AIs, to specify what type of data is encoded in a barcode, such as GTIN, batch number, or expiration date. These AIs define both the data type and the maximum length.
Basic notation conventions include:
- N = numeric digit.
- X = any character.
- Nn = exact number of digits.
- N..n = maximum number of digits.
- X..n = maximum number of characters.
For example, the GTIN AI requires a fixed numeric length, while batch numbers often use variable‑length alphanumeric formats. Following these rules ensures that scanners and software can correctly interpret each piece of information across different systems and countries.
There are two basic layout approaches for GS1 logistic labels.
1. Human‑Readable Layout
- Presents the data in clear, legible text.
- Helps warehouse staff, drivers, and inspectors verify contents manually.
- Typically includes product description, quantity, batch, and dates.
2. Machine‑Readable Layout (Barcodes or 2D Codes)
- Encodes data in barcode or QR‑style symbols for rapid scanning.
- Reduces manual input, increases accuracy, and speeds up throughput.
- Often used at multiple points: production line, warehouse, inbound receiving, and retail backroom.
Most GS1 labels combine both human‑readable text and barcodes, giving flexibility for automated and manual handling.
While sector‑specific rules differ, several core requirements apply across industries.
- Unique identification for each product, carton, and logistic unit using GTIN, SSCC, and other keys.
- Consistent data structure using the correct AIs and lengths defined in the GS1 General Specifications.
- Readable and scannable symbols that meet quality thresholds for contrast, quiet zones, and print resolution.
- Clear label placement on flat surfaces and at standard heights so scanners in warehouses and at docks can easily reach them.
For overseas brand owners and OEM partners, meeting these requirements reduces disputes, returns, and extra labeling work at destination warehouses.
GS1 labels directly impact how fast and accurately your products move through the supply chain. When your cartons and pallets are labeled correctly, every partner, from 3PL warehouses to retailers, can track items in real time.
Key benefits include:
- Fewer shipping errors because standardized identifiers reduce mix‑ups between similar SKUs.
- Faster receiving as scanning GS1 labels speeds up inbound processing and inventory updates.
- Improved traceability through batch and date data that supports recalls and quality investigations.
- Stronger regulatory compliance in industries that require standardized tracking for safety and authenticity.
For carton packaging machinery manufacturers and OEM factories, designing equipment and packaging lines that support GS1‑compliant printing helps your customers integrate seamlessly with modern supply chains.
Retailers rely on GS1 labels to manage inventory, pricing, and replenishment both in‑store and online. Common features include:
- GTIN in EAN‑13 or UPC‑A barcodes on consumer units and cartons.
- Product description, brand, and size printed in human‑readable form.
- Batch numbers and dates where shelf life or recalls are a concern.
In pharmaceuticals, GS1 labels support strict regulatory frameworks for safety and anti‑counterfeiting. Labels typically include:
- GTIN for each medicine presentation.
- Batch or lot number and expiration date.
- Additional regulatory identifiers defined by local authorities.
- Tamper‑evident features to show if packs have been opened.
Food producers use GS1 labels for product safety, traceability, and date management. Typical requirements are:
- GTIN in an appropriate barcode format for scanning in distribution and at the point of sale.
- Clear expiration or best‑before dates.
- Batch numbers linked to production runs and ingredients.
- Ingredient and allergen information on consumer‑facing labels.
If your factory supplies packaging or machinery to these sectors, understanding these specifics allows you to engineer labels and printing processes that meet your customers' compliance needs.
To adopt GS1 labels effectively, follow a structured approach.
1. Obtain a GS1 Company Prefix
Join your local GS1 Member Organisation to receive a unique company prefix. This prefix forms the base for your GTINs and SSCCs.
2. Assign Numbers to Products and Logistics Units
Define GTINs for each product, packaging level, or case configuration. Use the prefix to generate SSCCs for pallets and cartons.
3. Select Barcode and Label Printing Technology
Decide whether barcodes will carry static data using pre‑printed labels or dynamic data printed on‑line with variable information.
Choose between 1D barcodes such as GS1‑128 or 2D codes based on data volume and scanning environment.
4. Define Scanning Environments and Placement Rules
Consider where labels will be scanned, including production, warehouse, cross‑dock, and retail points.
Align label size, position, and orientation with GS1 placement guidelines.
5. Validate and Maintain Quality
Regularly verify barcode quality using verification tools and sampling plans.
Train operators and quality teams on printing, inspection, and rejection criteria.
For manufacturers of carton packaging machinery, integrating these steps into machine design, such as allowing flexible label positions, print heights, and code verification, creates a GS1‑ready packaging line.
Even experienced companies can run into problems when implementing GS1 labels. Avoid these frequent errors:
- Missing or incorrect SSCC on logistics labels, which prevents accurate tracking of pallets or shipping units.
- Reusing SSCCs too soon, causing duplicate records and confusion in tracking systems.
- Incorrect AI usage or data length, leading to misinterpretation and scanning failures.
- Poor print quality or contrast that makes barcodes unreadable and causes delays or relabeling.
- Non‑standard label placement on corners, edges, or damaged surfaces that block scanners and reduce read rates.
By building clear internal standards and collaborating with packaging and machinery suppliers who understand GS1, brands can dramatically lower these risks.
| Area | Best Practice | Why It Matters |
|---|---|---|
| Identification | Use unique GTINs for each SKU and SSCCs for every pallet or shipping unit. | Prevents mix‑ups and supports end‑to‑end traceability. |
| Data Structure | Follow GS1 AIs and length rules for all encoded data. | Ensures systems interpret barcodes consistently worldwide. |
| Printing and Quality | Use suitable printers and verify barcode quality regularly. | Reduces unreadable labels and warehouse delays. |
| Label Placement | Place labels on flat surfaces at standard heights and positions. | Maximizes scan rates in automated and manual environments. |
| Process Integration | Connect label printing with ERP or WMS data in real time. | Keeps physical shipments and digital records synchronized. |
For brands and wholesalers, it is not enough to design labels on paper, they need packaging and machinery partners who can execute GS1 requirements on the production line. Carton packaging factories and OEM machinery manufacturers can provide significant value by:
- Designing cartons with adequate flat panels and space for GS1 labels.
- Offering printing solutions capable of producing high‑quality barcodes and 2D codes.
- Configuring machines to print dynamic data such as batch, date, and SSCC inline as products move on the conveyor.
- Supporting integration with customers' ERP and WMS systems so label data matches shipment records.
By offering GS1‑ready equipment and packaging, you make it easier for global customers to meet retailer, marketplace, and regulatory requirements without additional investment or relabeling at destination.
If you sell into international markets, GS1‑compliant labels are no longer optional, they are a strategic requirement for smooth operations, compliance, and customer trust. Now is the time to review your packaging, labeling, and machinery to ensure that every carton and pallet leaving your factory is ready to be scanned and accepted anywhere in the world. Partner with experienced carton packaging and OEM machinery suppliers who understand GS1 standards, can support variable data printing, and can help you upgrade your production lines so you stay compliant today and competitive tomorrow.
Contact us to get more information!
In most modern retail and e‑commerce channels, every sellable product needs a unique GTIN encoded in a barcode. Without it, your products may be rejected by marketplaces, retailers, or warehouse systems that rely on GS1 identifiers for listing and inventory control.
A product barcode usually identifies a single sellable item, such as one box or bottle, using a GTIN. A GS1 logistic label identifies a logistic unit, like a pallet or master carton, typically using an SSCC plus optional data such as GTINs, batch numbers, and dates.
You obtain a GS1 Company Prefix by joining your local GS1 Member Organisation and registering your business details. Once assigned, this prefix allows you to create GTINs, SSCCs, and other identifiers that are globally unique and recognized in major retail and logistics systems.
SSCCs are designed to be unique identifiers and should not be reused for a significant period, typically at least one year or longer depending on your supply chain cycles. Reusing them too soon can lead to confusion in tracking systems, causing mismatches between shipments and electronic messages.
Poor barcode print quality, such as low contrast, smudging, or incorrect sizing, leads to scan failures at warehouses and retail receiving docks. In practice, this can mean relabeling work, delays in put‑away, charge‑backs from customers, or even rejected shipments.
1. https://blog.sneedcoding.com/blog/an-intro-to-gs1-label-requirements-and-if-it-matters-to-you
2. https://www.gs1.org/standards
3. https://www.gs1.org/docs/barcodes/GS1_General_Specifications.pdf
4. https://www.gs1us.org
5. https://www.cobaltis.co.uk/2022/10/a-guide-to-gs1-barcode-labelling/
6. https://www.gs1uk.org/sites/default/files/How_to_Barcoding_Getting_it_right.pdf
7. https://learn.microsoft.com/en-us/dynamics365/supply-chain/warehousing/gs1-barcodes
8. https://www.gs1.nl/kennisbank/efficiente-supply-chain/gs1-label/
