Adding a book that has the same ISBN as an other book

[Ahmad]

I have added the book (Ben-Hur: illustrated classic edition (1983), published by Moby Books). at the back of the book, the ISBN printed is 7009704500.
Goodreads would not allow me to save the book, because the same ISBN number is used for another book by the same publisher, namely (The last of the Mohicans).

I am not sure if the last of the mohicans have the same identical ISBN, or if that book as its details entered incorrectly, leading to the alleged conflict.

I can upload a photo of the back of (Ben-Hur) showing the ISBN number.
I added the back without the ISBN, but it would be difficult for anyone to search the database for this book, because (Ben-Hur) has been printed in several editions that are more famous and popular than this one.

Please advice.

[Arenda]

7009704500 doesn't seem to be an isbn, at least it is invalid when checking an isbn converter.

https://www.goodreads.com/book/show/3... which is the edition that you added, seems to be the same as this edition on Amazon: https://www.amazon.co.uk/Ben-Hur-Illu...
The isbn on the Amazon edition, 0710503229, seems to be used for a several classics illustrated books, according to this Worldcat search: http://www.worldcat.org/search?q=0710...
That isbn is already used on Goodreads for a different book.
Publishers sometimes use the same isbn for different books.

Since the "Illustrated Classics" books are adaptations, GR policy is to list the adapter as primary author, and the original author second. I've also added the isbn to the description.
https://www.goodreads.com/book/show/3...