If you currently have your book set up on KDP (Kindle Direct Publishing) and attempted setting up your book on your IngramSpark account and received the message “ISBN already in use”, this means your ISBN is already on the KDP account within the Lightning Source system and your book is available for sale through the expanded distribution program with KDP. This means your book is available for sale through Ingram's global distribution network.
If you own the ISBN and you want to transfer the book to your IngramSpark account, you will need to remove the book from expanded distribution with KDP. Once that is done, you can complete the Title Transfer process, giving us permission to transfer the files for the book and all the book information/metadata to your IngramSpark account.
For more information and instructions about the transfer process please see this article: