Hi, I am using odoo 19 web version (enterprise edition) ecommerce but turned on Prevent Sale of Zero Priced Product

If product price equals 0, replace 'Add to Cart' by 'Contact us'.

but after indexing page search console found the following error:
 
Merchant listings structured data issues detected in 

Search Console has identified that your site is affected by 3 Merchant listings structured data issue(s). The following issues were found on your site.

Top non-critical issues‡

Missing field "shippingDetails" (in "offers")

Missing field "hasMerchantReturnPolicy" (in "offers")

Missing field "availability" (in "offers")

‡Non-critical issues are suggestions for improvement, but don't prevent the page or feature from appearing on Google. Some of these issues could be reclassified as critical in the future, and critical issues can affect your site’s appearance on Search.

We recommend that you fix these issues when possible to enable the best experience and coverage in Google Search.

Are there any ways to fix this? I am using the 'Contact us for Quote' method on multiple products, so a lot of errors are appearing.