When “Review” in Single post, Google Console detects structured data issues

Hi,
When we post a new post as Review, it seems that a schema type Offer is added (see code below).

And Google Search Console picks up the following issues:

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

Invalid object type for field ‘brand’

Missing field ‘hasMerchantReturnPolicy’ (in ‘offers’)

Missing field ‘shippingDetails’ (in ‘offers’)

Example of code that is added:
<span class="td-page-meta" itemprop="offers" itemtype="https://schema.org/Offer" itemscope><link itemprop="url" href="https://www.justrunlah.com/2023/09/13/gear-review-skechers-gorun-pure-4/" /><meta itemprop="availability" content="https://schema.org/InStock" /><meta itemprop="priceCurrency" content="USD" /><meta itemprop="itemCondition" content="https://schema.org/UsedCondition" /><meta itemprop="price" content="0" /><meta itemprop="priceValidUntil" content="2025-01-08" /></span>

Is there anything that we can do to add the missing attributes that Google wants?

• This topic was modified 1 year by meremetia.
• This topic was modified 1 year by meremetia.
• This topic was modified 1 year by meremetia.

Understood – till then, can you give me some high-level direction on what hook / action are you using to inject the current schema code when review is enabled? With some very basic guidance on this I should be able to write my own function to also inject the additional parameters that I need… thanks