I can't add ISBN10/13

[Gjalt]

I've added some missing info because I just bought this book, but why can't I add the ISBN10 and ISBN13?
ISBN10 = 9026511620
ISBN13 = 9789026511622
Grtz, Gjalt

[Javier]

The ASIN is blocking the ISBN fields, you may want to contact support so they add them: https://www.goodreads.com/about/conta...

[David]

The simplest way to do it is to create a new edition with the ISBN and merge the ISBN-less edition into it.