If you registered your WooCommerce website on Google Search Console for monitoring your SEO efforts and search appearance errors, you probably got this “No global identifier provided (e.g. gtin, brand)” email notification at some stage. I got it too.
Search Console optionally requests you set a unique product GTIN structured data for all your products – I believe in case you wish to sell on Google Shopping – and therefore sends you this error notification whenever a product is missing this.
You could use a WooCommerce GTIN plugin from the WP repo, yes. Or you could be smart, and programmatically set the GTIN to the same value of the product SKU, as long as all your products have a unique SKU value. Today, we will cover the latter. Enjoy!
PHP Snippet: Programmatically Set Product GTIN Based on SKU
/** * @snippet Set WooCommerce Product GTIN * @how-to Get CustomizeWoo.com FREE * @author Rodolfo Melogli * @compatible WooCommerce 7 * @donate $9 https://businessbloomer.com/bloomer-armada/ */ add_filter( ‘woocommerce_structured_data_product’, ‘bbloomer_set_gtin_from_sku’, 9999, 2 ); function bbloomer_set_gtin_from_sku( $markup, $product ) { $markup[‘gtin8’] = str_replace( ‘-‘, ”, $markup[‘sku’] ); return $markup; }
Was this article helpful?
YesNo
Where to add custom code?
You should place PHP snippets at the bottom of your child theme functions.php file and CSS at the bottom of its style.css file. Make sure you know what you are doing when editing such files – if you need more guidance, please take a look at my guide “Should I Add Custom Code Via WP Editor, FTP or Code Snippets?” and my video tutorial “Where to Place WooCommerce Customization?”
Does this snippet (still) work?
Please let me know in the comments if everything went as expected. I would be happy to revise the snippet if you report otherwise (please provide screenshots). I have tested this code with Storefront theme, the WooCommerce version listed above and a WordPress-friendly hosting.
If you think this code saved you time & money, feel free to join 17,000+ WooCommerce Weekly subscribers for blog post updates and 250+ Business Bloomer supporters for 365 days of WooCommerce benefits. Thank you in advance!
Need Help with WooCommerce?
Check out these free video tutorials. You can learn how to customize WooCommerce without unnecessary plugins, how to properly configure the WooCommerce plugin settings and even how to master WooCommerce troubleshooting in case of a bug!
Rodolfo Melogli
Business Bloomer Founder
Author, WooCommerce expert and WordCamp speaker, Rodolfo has worked as an independent WooCommerce freelancer since 2011. His goal is to help entrepreneurs and developers overcome their WooCommerce nightmares. Rodolfo loves travelling, chasing tennis & soccer balls and, of course, wood fired oven pizza.
