I'm testing against the sandbox. I've confirmed that IPN is enabled and PDT is enabled for my account. Auto Return is set to on and I have the home page of the site for the return URL.

The PayPal sandbox account shows "Notification of Payment Received" and shows "Receipt for Your Payment" for each transaction.

All the Subscriptions show "Registered" and "Unpaid" in Paid Subscriptions: Subscriptions.

If I delete the token from the payment gateway, everything still functions in the same manner which makes me wonder if there is something wrong with the token but it's cut/paste out of PayPal.

Is there anything else that can cause this error?

Thanks

Erich

Thanks Krileon.

The Notifications shows a series of IPN entries. Each of the entries shows
Verification: Verified
Payment method: shows a "-"
Status: Pending
Pending Reason: Multi Currency

The pending status appeared to be related to the fact that the paypal sandbox is a US$ business account even though my business account is actually a Canadian dollar account. If I change the currency of the Paid subscriptions to US$, then the transaction completes, but I still get the same error when the customer returns to the site. So this is progress but it's less clear as to why this message is appearing considering that the Notifications are showing IPN entries and the transaction completes.

Where else should I look for issues?

Thanks Krileon. I've read the documentation but unfortunately, since Paypal has changed their interface recently, the instructions in the manual in and your posting here for enabling PDT are no longer correct. The proper procedure is now:

1. Log into PayPal.
2. Click My Account | Overview.
3. Click My Business Setup (on the right-hand side).
4. Click Customize my buyer's experience.
5. Locate Auto Return and Click Edit.
6. Enable Payment Data Transfer.
7. Click Save.

I've attached a screenshot of the settings showing PDT enabled.



So, PDT is enabled, and I'm receiving IPN notifications. What other settings can have an effect?

The solution was two-fold. First, in Paid Subscriptions | Gateways in the "PayPal Account and PDT Identity token" area, use your Merchant ID in the "PayPal Business (email or secure merchant ID)" field and your primary account e-mail address in the "PayPal Main receiver account (email) (if Business is different from your main account)" field. This should get everything to work properly with your live PayPal account. I found that I still had problems with the sandbox.