help topic
adding an alternate-cover edition
If you find that a book with a specific ISBN has already been listed with a different cover, then it is likely the ISBN was reused for a later/earlier reprinting. If that is the case, you can manually add a new edition to the database that would be an 'alternate cover edition.' This is done because as of now, it is not possible to upload multiple covers of a book, and because changing the cover of an existing edition is not ideal. Some people may have added the existing edition with that specific cover because it is the one they own. If you want to have an edition shelved with your specific cover, then it is accepted procedure to create a new edition with your cover art. However, since an ISBN can only be used once in the database, leave the ISBN fields on your new edition blank then in the Description field, add a Librarian's Note: stating that it is an alternate cover edition and state the ISBN. You can also use the Librarian Note feature found near the top of the book edit page to attach a note to the book (this helps prevent the book from accidentally being deleted by a librarian who thinks it is an invalid entry).Here is an example of an alternate cover edition of a book: LINK
In the other case of duplicate ISBNs, it may be that an ISBN was reused on a complete different book. This shouldn't happen because ISBNs are supposed to be unique, but exceptions have been found. If that is the case, manually add a new edition to the database, leaving the ISBN field blank then in the Description field, add a note stating the issue with the ISBN and listing the actual ISBN. You can also use the Librarian Note feature found near the top of the book edit page to attach a note to the book (this helps prevent the book from accidentally being deleted by a librarian who thinks it is an invalid entry).
Here is an example of a book where an ISBN was reused on a completely different book: LINK
It is important never to alter an ISBN simply to get a book to save (if getting an ISBN error when trying to save). ISBNs are specific numbers associated with specific books.
