Cause
- You entered an invalid ISBN code or
- the ISBN code wasn't found in the ISBN codes database.
Solution
Verify that the ISBN is correct.
If the ISBN is correct, it means that is it not in the ISBN codes database.
Related information
- ISBN error: code not found in the database
- Libraries and collections info page
- It is possible for the code to be in the database, but that the data is incomplete (for example the editor is missing).