Many pages declaring one identical set of alternates means the block was hard-coded into the template instead of being built per page. It is right for the page it was copied from and wrong for every other.
The finding reads:
critical hreflang-static-cluster … pages out of … declare the same set of alternates (…) and not one of them references itself. The template prints the home page's cluster on every page — as far as a search engine is concerned there are no links between the versions at all. Fixed once, in the template.The template prints the home page's cluster on every page. The cluster has to be built from the translations of THIS page.
This is a site-level finding: it belongs to the site, not to any one page, and is reported once however many pages are audited.
pipx install indexgap
cd your-project
indexgap init
indexgap checkThen indexgap brief turns
every finding on this page into a work order in indexgap-briefs/,
with the thresholds the result has to satisfy and the command to check it.