Rankmath’s product schema cant take variable product ID as SKU

Hello,

Please add following code in your theme’s functions.php file to use Variation ID in Product SKU Field:

add_filter( 'rank_math/snippet/rich_snippet_product_entity', function( $entity ) {
	global $product;
	if ( $product->is_type( 'variable' ) ) {
		$variations = $product->get_available_variations();
		foreach ( $variations as $key => $variation ) {
			$entity['offers'][ $key ]['sku'] = ! empty( $entity['offers'][ $key ]['sku'] ) ? $entity['offers'][ $key ]['sku'] : $variation['variation_id'];
		}
	}

	return $entity;
});

I hope that helps. If you need any other assistance, please feel free to let us know.

Thank you.

Hello,

We might need to take a closer look at the settings. Please edit the first post on this ticket and include your WP logins and the variable Product link in the designated Sensitive Data section.

It is completely secure and only our support staff has access to that section. If you want, you can use the below plugin to generate a temporary login URL to your website and share that with us instead:

https://wordpress.org/plugins/temporary-login-without-password/

You can use the above plugin in conjunction with the WP Security Audit Log to monitor what changes our staff might make on your website (if any):

https://wordpress.org/plugins/wp-security-audit-log/

We really look forward to helping you.