In this article
Reasons why the issue is happening
One or more Global Trade Item Numbers (GTINs) that you submitted for your products aren't formatted correctly. This error usually occurs because:
- The GTIN contains characters that aren't numerals.
- The GTIN has an invalid checksum (a technical method used to verify if your data is correct).
- The GTIN uses formatting that doesn't match one of the standard GTIN types. You must only use GTINs as they have been assigned by the manufacturer.
- Too many or too few digits. GTINs are 8, 12, 13, or 14 digits.
- Failed check digit validation. If you mistyped a digit, the check digit can help to catch that. Use the GS1 check digit calculator
How to fix the issue
Add a valid GTIN for one or more of your products. If your product has a barcode, you can normally find the GTIN on the packaging. For more information about the validation of GTINs, refer to the GTIN Validation Guide.
Fix products one by one directly in Merchant Center
Go to Products in Merchant Center, then select the Needs attention tab.
Use the filter icon
above the table to find all products affected by your issue.
Click on the title of the product you want to fix, then click Edit product.
Add a GTIN to your product.
Select Save.
Fix multiple products at once
Go to Products in Merchant Center, then select the Needs attention tab.
Use the filter icon
above the table to find all products affected by your issue.
Select the Download icon
to download a list (.csv) of all affected products for all issues or this particular issue.
Cross reference the downloaded list with your uploaded product data, and make sure that the affected products have a GTIN (using the GTIN
[gtin] attribute).
Reupload your corrected product data to Merchant Center using your chosen upload method.
Next steps
After making the requested changes, check that you’ve fixed the issue by making sure it’s no longer listed on the “Needs attention” page.
Keep in mind: It may take some time for your change to be reflected on the “Needs attention” page.