GS1 US Data Hub® Help Center
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Use the categories on the left hand side to focus on a specific topic. Or type keywords in the search box. Or get answers to basic questions using the "How Do I..."  category. 

What Fields Can Be Changed?

8 April 2020

What Fields Can Be Changed?

Any attribute can be changed when the product is in the Draft status. 

The tables below list all available fields and whether they can be modified when the product is in either the PreMarket or In Use status

For a product in the Archived status, the only action you can take is to change the status back to In Use and then make specific changes, if needed.


Product Detail Screen

Field PreMarket Status:
Can field be changed?
In Use Status:
Can field be changed?
GS1 Company Prefix No  No
GTIN No - but you can retract the GTIN No
GTIN-12 (U.P.C.) or GTIN-13 (EAN) No - but you can retract the GTIN No
Industry Yes No
Packaging Level No No
Product Description Yes Yes*
Language (Product Description) Yes Yes
SKU Yes Yes
Brand Name Yes Yes*
Language (Brand Name) Yes Yes
Variable Measure? No No
Purchasable by Consumer? Yes - unless a GTIN-14 is assigned Yes - unless a GTIN-14 is assigned
For Shipping Purposes Only? Yes - unless a GTIN-14 is assigned Yes - unless a GTIN-14 is assigned
Item Contents No No - changing Item Contents requires a new GTIN
Quantity Yes No - changing Quantity of contents requires a new GTIN

*While you can change either the Product Description or Brand Name for a product set to In Use, this is
commonly done to correct a typographical error.  You cannot change the Product Description to reflect a
new product, per the GTIN Management Standard: “Any new product requires the assignment of a GTIN.”
Similarly, based on the impact of the Brand Name change on your trading partners, you may want to consider
assigning a new GTIN, per the GTIN Management Standard: “A change to the primary brand that appears
on the trade item, requires assignment of a new GTIN.”


Step 3 - Enhance Your GTIN Data Screen

This table lists the fields displayed on the optional Step 3 - Enhance Your GTIN Data screen, and whether they can be modified when the product is in either PreMarket or In Use status. 

Field PreMarket Status:
Can field be changed?
In Use Status:
Can field be changed?
Image URL Yes  Yes
Target Markets Yes Yes
Global Product Classification Yes Yes
Net Content 1 Count No No - however, content can be entered if this field is blank
Net Content 1 Unit of Measure (UOM) No No - however, content can be entered if this field is blank
Net Content 2 Count 
Net Content 3 Count
No No - however, content can be entered if this field is blank
Net Content 2 Unit of Measure (UOM)
Net Content 3 Unit of Measure (UOM)
Yes Yes
Product Description in Different Language Yes Yes
Brand Name in Different Language Yes Yes
Sub-Brand Name
Yes Yes
Product Description-Short
Yes Yes
Label Description Yes Yes


Step 4 - Add Product Dimensions Screen

This table lists the fields displayed on the optional Step 4 - Add Product Dimensions screen, and whether they can be modified when the product is in either PreMarket or In Use status.

Field PreMarket Status:
Can field be changed?
In Use Status:
Can field be changed?
Dimensions - Height Yes  Yes - up to 20% of the original value
Dimensions - Width Yes Yes - up to 20% of the original value
Dimensions - Depth Yes Yes - up to 20% of the original value
Weight - Net Yes No - however, content can be entered if the field is blank
Weight - Gross No Yes - up to 20% of the original value
Weight - Unit of Measure (UOM) No No - however, content can be entered if this field is blank


Work with My UPC-A Barcode

8 April 2020

Work with My UPC-A Barcode

To generate a UPC-A barcode image in GS1 US Data Hub, you must first create the product detail record. When you assign an available GTIN to the product, and click “Save and Continue,” the product status changes from Draft to PreMarket. The “View Barcode” button displays. When the product is in the PreMarket status, you can print a "For Placement Only" or FPO barcode image. 

When the product is ready to share with the marketplace, click the Set Status to In Use button. Click the "View Barcode" button to download the PNG barcode image file - or you can export the barcode definitions to share with a GS1 Standards Professional Barcode Image and Print Vendor

Note: Did you license a single GS1 US GTIN? Then the status of your product is already In Use. To view the barcode image for a GS1 US GTIN, click "Product," then click the "Product Description" link (in blue text), then click the "View Barcode" button.

Here are questions members have asked about working wit the UPC-A barcode in GS1 US Data Hub:

Q. Can I change the size of my barcode?
A. While you can change the size of your barcode to best fit your packaging, you should stay within the sizing restrictions noted below. If you are selling very small or oddly shaped products, other barcodes (besides the UPC-A) are available. However, some scanners are limited in what they can read and the choice of an alternate barcode should be researched before being pursued.  

Please contact one of the GS1 Standards Professional Barcode Image and Print Vendors to assist you with sizing changes.

Q. How big or small can I make my barcode? 
A. The size of your barcode will depend on the size of the bars themselves, which is given by the width of the narrowest black bar (this is called the X -dimension). These are defined in the 

GS1 General Specifications (GS1 symbol specification tables):

- The Minimum X-dimension for the UPC-A barcode is 0.0104 inches;
- The Maximum X-dimension for the UPC-A barcode is 0.0260 inches;

Based on the X-Dimensions sizes noted, the corresponding height of the barcode will be:

- For Minimum X-dimension (0.0104 inches), the bar height for the UPC-A barcode is 0.72 inches, and the minimum width is 1.174 inches (you can select this Minimum barcode size in GS1 US Data Hub)

- For Maximum X-dimension (0.0260 inches), the bar height for the UPC-A barcode is 1.8 inches, and the maximum width is 2.936 inches (you can select this Maximum barcode size in GS1 US Data Hub)

Note: "bar height" refers only to the bars and does not include the human readable interpretation (numbers) or drop-down bars (as highlighted in the image below). GS1 US Data Hub provides the human readable interpretation and drop-down bars in the image file you can download.

Also, "truncating" the barcode (reducing the height of a barcode relative to its length) is not recommended, as truncation inhibits the ability of a symbol to be scanned at the point-of-sale.

For assistance with resizing the barcode, please contact a  GS1 Standards Professional Barcode Image and Print Vendor.

Q. What are the dimensions of the "Target” UPC-A barcode image file that can be downloaded?
A: In GS1 US Data Hub, if you select "Target" from the Size section (the default selection), the dimensions of the UPC-A barcode image file, which includes the human readable interpretation and Quiet Zones, are approximately 1.15 inches in height and 1.58 inches in width.

If you select "Minimum" from the Size section, the dimensions are approximately 0.93 in height and 1.27 in width.

U.P.C. barcodes have a fixed relationship between barcode height and width, so if one dimension is modified, the other dimension must be altered by a proportional amount. For this reason, you should NOT resize or crop these barcodes.  

Q. What is the format of the barcode image file?
A. To save the barcode image file, click the "View Barcode" button, then "Preview Barcode." The Preview Barcode window opens. Click the Download button (highlighted below). GS1 US Data Hub provides the file as the PNG "Image Type." The PNG format is the only format available. If you require another format, such as EPS (or vector format), it’s recommended that you click the “Export Definition” button to export the barcode definitions and share these with a GS1 Standards Professional Barcode Image and Print Vendor, who can generate other image types.

Q. Will my UPC-A barcode scan?
A. The UPC-A barcode image generated by GS1 US Data Hub will scan as intended (when there are no image modifications made). However, brand owners must take an important step outside of GS1 US Data Hub to ensure their products are properly identified at retail point-of-sale. They must send this product/GTIN/barcode data to their trading partners. When this product data is shared with trading partners, the trading partner can then populate their databases so their point-of-sale scanners can retrieve the product data using the GTIN within the scanned barcode.

To learn more about barcode testing and sharing your product data, visit the GS1 US Test/Verify Printed Barcodes and GS1 US Share Information Electronically pages.

Also, read the Data Hub Frequently Asked Questions to learn about the benefits of enabling "product data sharing" in GS1 US Data Hub.

 

Q. How much space do I need on either side of my UPC-A barcode? 
A. The space (or Quiet Zones) to the left and right of your UPC-A barcode must be at least nine times the X-dimension. This means they must be at least 0.0936 inches for the minimum x-dimension and at least 0.234 inches for the maximum X-dimension. If packaging or label space allows, additional open space to either side of the barcode is recommended to allow for printing needs.

 

Q. How much space do I need above my UPC-A barcode? 
A. There is not a requirement for blank space above or below a UPC-A barcode.

 

Q. What colors and backgrounds can I use in my barcodes?
A. GS1 US Data Hub presents the barcode with black bar colors on a white background. If you or your print vendors decide to change the colors, try to make your barcodes with as much contrast between the bars and the background as you can. Don’t choose similar colors for both. The best color selections for bars and background are:
- Best background colors are white, followed by red and orange;
- Best bar colors are black, followed by dark blue or dark green.

 

Q. Are there barcode placement best practices I should consider?
A. Yes, here are a few:
- Do keep the barcode on a flat surface; don’t wrap a barcode;
- Do make the barcode easy to scan; don’t add multiple barcodes on a unit or case;
- Do make sure nothing sits over the barcode; don’t cover the barcode;
- For items intended for retail point-of-sale (POS), the preferred barcode placement is on the lower right quadrant of the back. Alternative placement for a barcode is the lower right quadrant of a side of the container other than the back; bottom marking is acceptable.

For more best practices, please view the GS1 US Place Barcodes on Products page. 

 

Q. Can I download multiple barcode images at one time?
A. No, but as a best practice, visit the My Products screen in GS1 US Data Hub to download each image as a PNG file:

- Click the product detail record for the desired product
- Click the View Barcode button
- Click Preview, then the Download button

Q. My products are cylinders and my barcodes are not scanning. What can I do?
A. If the angle of the curve is greater than 30 degrees,  you should orient your barcodes so that they align with the length of the tube and the symbols look like a ladder, as shown in the image below (as opposed to a picket fence). This will help prevent the extremes of the symbol to disappear around the curve (both ends cannot be visible to the scanner at the same time).