some published books are not listed in the OMP (184.108.40.206) catalog although they are published, searchable via PKP search, and the book page is accessible.
We identified the books as the ones with different locales for the submission and the title/metadata. The installation had 3 languages activated in the past, but only en_US now. A book that was e.g. submitted in French and has only English metadata is not shown in the catalog (ordered by title).
We will correct the language entries but still the OMP catalog should show all published books and fall back to metadata that is available.
If you have a lot of books, errors like this will only become obvious by coincidence. For managers with no access to the database it is not feasible to check the entries of all books.