Description: The transaction works (you received confirmation from Paypal). You are taken back to the Secure-eBook Web site and the following error is displayed:

The transaction has failed.  Payment processor returned this message:

INVALID

This message is returned when your Paypal's Payment Data Transfer (PDT) has not been turned on.

To turn on PDT please follow these steps:

• Access “Website Payment Preferences” from your PayPal Account's Profile.
• Set Auto Return to ON.
• If the Return URL is empty, set it to your company or product's home page. If there already is something there, don't change it.
• Set the Payment Data Transfert to ON.
• Save your changes.

• If this is the first time your turn on PDT, Paypal will show you your Identity Token.

• Select the complete token and copy it. (Under Windows, you can press both CTRL and C keys simulatenously to make your computer “remember” your selection).

• If Paypal does not show your Identity Token, go back to the “Website Payment Preferences”. It will be displayed in the “Payment Data Transfer” section and you can copy it from there.

• Log into your Secure-eBook account.
• Click on “Payment Processor” under the “My Account” section. Paypal should already be selected.
• Keep clicking on “Next” until you reach the Paypal Account Configuration Identity Token page.
• Paste your Identity Token in the edit field. (Under Windows, you can press both CTRL and V keys simulatenously to make your computer write a copy of your last “remembered” selection in the currently selected edit field).

• Click on “Finished” to save your changes.