GTIN missing in Rich Results

Hello,

Thank you for contacting Rank Math and sorry for any inconvenience that might have been caused due to that.

Could you try by adding the following code at the end of your functions.php file?

/**
 * Filter to add GTIN to WC Products.
 *
 * @param array $entity Snippet Data
 * @return array
 */
add_filter( 'rank_math/snippet/rich_snippet_product_entity', function( $entity ) {
	global $product;
	//$product = RankMath\Helper::get_product();
	$gtin = $product->get_meta( '_wpm_gtin_code' );
    $entity['gtin12'] = $gtin;
    return $entity;
});

Looking forward to helping you. Thank you.

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