Catalog SEO Configuration and Store View Scope
Compare current URL rewrites with historical product and category paths. The Canonical should use the desired final address.
Compare canonical settings for products and categories in the effective configuration range. A store view can override an inherited value; layered navigation extensions can also bring in their own rules.
Where to check the setting in Magento
Under Stores → Configuration → Catalog → Catalog → Search Engine Optimization, check the canonical specifications for products and categories in the right scope. Also, compare URL rewrites and extensions for layered navigation. A Store View deviation must not be obscured by a global setting.
Example of this specific finding
Illustrative control case: The canonical points to /ratgeber-alt/, this address redirects to /ratgeber/. The desired final URL is already known.
follow-up audit in Magento
Compare a product via direct and category path as well as a filter page. Do not force all filter combinations to the same address without checking their contents.
Spend the final matching goal directly in the canonical. Orient sitemap and internal links to the same address and verify their response.
Derogations and scope
A forwarding does not automatically make the content unusable. The result initially shows an unnecessary or possibly contradictory intermediate signal.
Reference: Magento Open Source or Adobe Commerce with classic storefront. Consider store views and extensions; other storefront architectures have their own configurations.
Classify the general error
Definition, system-independent causes and further correction examples: Deposit the final address in the canonical