SEO fields and title templates per content type
Compare the SEO template for posts and archives with individual overrides. A static template text can produce many identical descriptions.
Compare the saved individual title with the title template of the active SEO plugin. Theme and page builders can add additional values. For archives, titles and descriptions often come from their own rules instead of from the contribution.
Where to check the setting in WordPress
If the title is missing, check the theme support for the title tag and the wp_head call in the classic theme. Then you control wp_get_document_title or the SEO plugin override. The plugin is often responsible for meta descriptions and open graphs; the post title alone does not generate these fields.
Example of this specific finding
Illustrative control case: Three different service pages take over the description of the start page. The texts therefore do not say which specific performance the respective page explains.
follow-up audit in WordPress
Retrieve a contribution with an individual field, one without override and an archive. This is the only way to distinguish whether an individual value or the general fallback is wrong.
Each independent service receives a suitable description from its own content. In the HTML, check whether the CMS outputs the maintained value or continues to output a global fallback.
Derogations and scope
Identical descriptions on real URL duplicates are another problem: First clarify the URL consolidation there.
Related: WordPress with classic or block theme. SEO plugins and page builders are different; there is no universal menu path for all installations.
Classify the general error
Definition, system-independent causes and further correction examples: Differentiate duplicate descriptions by type of page