How to fix: Invalid GTIN in unsupported format

In this article

• Reasons why the issue is happening
• How to fix the issue
• Next steps

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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 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 (a technical method used to verify if your data is correct). If you mistyped a digit, the check digit can help to catch that. Use the GS1 check digit calculator

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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 Productsin Merchant Center, then select the Needs attentiontab.

Use the filter iconabove 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 Productsin Merchant Center, then select the Needs attentiontab.

Use the filter iconabove the table to find all products affected by your issue.

Select the Downloadiconto 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.

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Next steps