How can I resolve the GTIN number issue for my online store's products?

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Hello,hope every is doing well and hope every one is expert here.Am facing issue currently i need support.I have shopify store and have upload near to 200 product from which website i have purchased products there is no GTIN only sku i have .When i start running google adds product rejected suddenly due to GTIN i can get GTIN number,from which website i purchased product they are not giving me GTIN they are saying they dont have now how can i add GTIN number any  best solution plz support

Replies 3 (3)

Shopify Staff
2040 223 325

Hey @Hanzla3,


If your products do not have a GTIN, you need to ensure the identifier_exists field is false which will skip the GTIN requirement. If your products do have a GTIN, then enter it in the barcode field.


If the manufacturer has not assigned a barcode to the products, then do not submit a value in GTIN, MPN, and Brand. And tick the box next to the custom product.

For some brands, if you send the brand name and mpn, then Google may require additional info such as a barcode. This can happen when Google has identified that other merchants have submitted a barcode.


Hope this helps!

Moira | Social Care @ Shopify
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Shopify Partner
2989 222 716

Hello @Hanzla3 In Google Merchant Center > products > all products > click on a product > scroll to the bottom > you should see in the final attributes, no brand, no mpn, and of course no mpn values.

And have identifier exists to the value no


You can use feed rules:


To clear the values using a modification, and add the identifier value using edit source.


I have created a step by step guide here:

Get in touch with Emmanuel: a Google Shopping Specialist, Google Ads Diamond Product Expert, and also a a Google Product Expert Education 2021 & Tailwind 2023 Award winner.
Need Google Merchant Center or Google Shopping support?.

Shopify Partner
2405 223 535

Hello @Hanzla3,

Gina here from flareAI.


Google Merchant Center product feed expects for each product the appropriate unique product identifier values like GTIN and MPN. If you don't have the values then use the identifier exists [identifier_exists] attribute to indicate that unique product identifiers (UPI) aren't available for your product.


If these identifiers are not available, you have to set identifier_exists=No, otherwise set it to Yes.


You can use GMC feed rules to set the identifier_exists to "No".


I hope this helps,


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