I posted some books today and got the above message for one of them. The book is a paperback published by Corgi, granted a British edition, but another paperback also a Corgi by the same author, Pat Barr, posted without a problem. The first 7 digits of both ISBNs are identical, yet one posted and the other wouldn't post and kept coming up with this message about the ISBN.

Anyone have a clue?

Whats the ISBN?

9780552128193

I've seen several unbound copies online, wonder if that has anything to do with it.  When I search the ISBN here it will not even display any of the information.

Plus even WorldCat  and OCLC that I use for work has very limited information for this book.

But nothing I can find that says its other then a paperback- massmarket sized book.
 

It's curious because both books are by the same author and the same kind of paperbacks, yet one posts and the other doesn't. An American edition of the book comes up on amazon. Here's a link to that if anyone is interested:

  http://www.amazon.com/Kenjiro-Pat-Barr/dp/0446300306/ref=sr_1_1?s=books&ie=UTF8&qid=1337892556&sr=1-1 

Think I can post it by description instead as if it has no ISBN?

Yes, I would post it that way. The ISBN covers more than one binding in this case, and if you are sure your binding is legal, I think you are good.

I'd email TPTB about it, or one of those data edit people.    I;d take a photo of the book, and the inside front page where the ISBN is listed.  That way they can see its a legal copy and not something shady.

I bet the ISBN has been used both for an unbound edition and also for a paperback.  Please go down to the bottom right corner of any page here.  Under "company" click on "contact us" and then use the Feedback option to talk to the Admin Team.  Explain that you have a paperback edition of the book with this ISBN, and ask them if they would change the binding for the ISBN to "paperback" or "mass market paperback" so that you can post your book to the ISBN.

OK thanks.