Required metadata

  1. Go to the Metadata > Formats section, under the EPUB tab.

  2. Select ISBN and enter a valid 13-digit ISBN.

    Be sure to enter the correct ISBN. A wrong ISBN can cause serious problems once the publication is online.

  3. Fill in the release plan (Publication and For sale dates are required).
  4. Click Save.
  5. Drag and drop the desired file onto the area under Files and Preferences, or click Browse.

The newly uploaded file will become visible in the Files and Preferences area of the Metadata > Formats > EPUB section, confirming the success of the operation.

For files larger than 50 MB, processing will take place in the background. The file will only be visible once processing is complete.

In the case of a preorder, be sure to check the box Start the release plan before uploading the file. It is important to note that the final file must be submitted 14 days before the date of availability for sale.