Product rules and deliberately excluded shop functions
Check the SEO setting and publishing status of the affected product. A global release must not unnecessarily open shopping cart and other functional pages.
Check the specification of the SEO plugin for products, product categories and special shop pages. Shopping cart and checkout have a different task than a publicly advertised product detail page.
Where to check the setting in WooCommerce
Distinguish product and category pages from shopping cart, checkout and account area. Then check the rule of the SEO plugin for the respective content type. A necessary block for personal shop functions should not be transferred to the entire product catalogue.
Example of this specific finding
Illustrative control case: The new offer page was taken over from a staging template and still bears noindex after publication.
follow-up audit in WooCommerce
Retrieve product, category and cart as three separate control cases. Unify an indexing rule not only because all URLs come from the same shop.
Check page-related settings, templates and possible HTTP headers. After cleanup, check the public response without logged-in session.
Derogations and scope
A deliberately not yet released page may remain excluded. Importance and release must be clarified before the change.
Regarding: WooCommerce on WordPress. Block and classic product templates as well as SEO extensions can have different output locations.
Classify the general error
Definition, system-independent causes and further correction examples: Exclude a release brake from the test phase