Certain imprints from publisher Pearson have restricted their content to be available for download on a single device. If you have an active download on one of these titles, you will not be able to re-download the book to additional devices authorized to the same Adobe ID or transfer the file to another device.
The restriction is on titles from the following imprints:  
When you attempt to download the book to a different device after the initial download, you will get an error message in Adobe Digital Editions or Bluefire Reader.
The ADE error is Error getting License. License Server Communication Problem: W_ADEPT_CORE_WRONG_DEVICE:
W_ADEPT_CORE_WRONG_DEVICE error on Adobe Digital Editions

In Bluefire reader, the error varies by device. The following is an example from Android:
Bluefire Reader error on Android device: Download error: This book cannot be read on your device

And iOS:
Bluefire Reader error on iOS device: W_ADEPT_CORE_WRONG_DEVICE