google webmaster tools error

Hi
In my google webmaster tools when I try and validate my products that need fix I get this error Invalid enum value in field "availability" I have no idea why or how to fix? Is there a app . I have opencart 3.0.2.0 Thanks

The field "availability" is a part of the product structured data.
https://developers.google.com/search/do ... es/product
It should be "InStock" or "OutOfStock" (see possible values: https://schema.org/ItemAvailability)
By default in Opencart there is no structured data ( the Google requirements change very often)
Check your extensions, modifications or the theme settings to know how the structured data is added to your site and ask the developer to fix this issue(Invalid enum value).
You can check also my structured data extension
Rich Snippets SEO Product, Breadcrumbs, Knowledge Graph, Search

edit:
Just to add this article about warnings in the test tool and webmaster reports:
Google Says it Doesn’t Require Fixing Structured Data Warnings

Thank you I kinda thought it may have been the structured data. Just wanted to make sure.