Changing “on backorder” to “in stock” in your product feed
You created a product feed for Google's Merchant Center as you want to start promoting your products in Google Shopping only to find out that Google has disapproved (some of) your products because of an issue with your 'availability' field. You seem to have added products that have an availability that says "on backorder" (which is a WooCommerce stock status value): Unfortunately Google doesn't accept the availability status "backorder". Only the values "in_stock", "out_of_stock" and "preorder" are allowed for ...