Hello,
Thank you for contacting Rank Math, and sorry for the inconvenience caused.
Rank Math takes the schema data from your product pages automatically and turns it into Schema-ready content. Likewise, the aggregateRating and review fields are taken from your actual product reviews that your buyers/customers leave on your products.

If you don’t have any reviews yet, that is going to show up as a warning in the schema testing tool. That’s because Google will actually look for those fields.
Please acquire some reviews and ratings to get rid of the aggregateRating
and review
warnings.
You can fix the SKU and availability issue easily as well:

To fix the brand
warning, head over to WordPress Dashboard > Rank Math > General Settings > WooCommerce
and choose from any of the available fields to use as your product’s brands.

If you want to use a custom value for your Brands, you can do that by using the following code in your theme’s functions.php file:
// Add Brand for Products.
add_filter( 'rank_math/snippet/rich_snippet_product_entity', function( $entity ) {
$entity['brand'] = 'Rank Math';
return $entity;
});
Replace the “Rank Math” text with your actual brand name then run your website through the Structured Data Testing tool once again.
Hope that helps and please do not hesitate to let us know if you need our assistance with anything else.
thank you for reply
just these 2 errors are remaining .. help me to solve
https://ibb.co/TbG15FY
Hello,
The itemlistElement
issue is coming from breadcrumbs added by your theme: https://i.rankmath.com/snwGje. please check with your them provider to help your remove the breadcrumb schema since you are already using Rank math breadcrumb schema.
As for the issue with offers, you will need to add product price & availability status to have a value for this.
Hope this helps you.
Thank you for your reply.
I connected with the theme supplier to remove their bread crumbs it removes the breadcrumb with the error but one minor problem remains that the rich result is not picking up the name of the product check the image.
image > https://ibb.co/kGhxYj8
rich results > https://search.google.com/test/rich-results?id=g1U3T5QkYaldQIuylx9uEA
Hello,
The unnamed item is not an error and should not worry you.
Even if you check Google’s examples here: https://developers.google.com/search/docs/data-types/breadcrumb and click on Try it out in the Rich Results Test
; you will see it shows the same.

Hope this helps. Do not hesitate to let us know if you have any further questions.
Thank you.
Hello,
Since we did not hear back from you for 15 days, we are assuming that you found the solution. We are closing this support ticket.
If you still need assistance or any other help, please feel free to open a new support ticket, and we will be more than happy to assist.
Thank you.