ISBN Already in Use KDP

If you currently have your book set up on KDP Kindle Direct Publishing and attempted setting up your title on your Lightning Source account and received the message “ISBN already in use”, this means your ISBN is already in the expanded distribution program with KDP.

Once you have confirmed that the ISBN does belong to you and the book is no longer in expanded distribution with KDP, you can complete the Title Transfer Addendum and process, giving us permission to transfer the book to your Lightning Source account. You will provide the ISBN of the book and the Lightning Source account number it should be transferred to.

For more information about the transfer process please see this article: Title Transfer Process

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