xpise27

Ok. Thanks for the quick reply!

I have several clients that have an old IPN URL. I have other clients with a new IPN URL. I'm needing to update/modify an individual clients old notification URL to the new one. The IPNs with the old URL are failing I received this from the PayPal Merchant Technical Support: You can modify one client's IPN url by adding PAYMENTREQUEST_0_NOTIFYURL to your Do Express Checkout API call. If you are using PayPal Standard, use NOTIFY_URL. In both cases you set it equal to the URL the customer is trying to use for their IPN URL. You can also update it from within PayPal.com under profile- My selling tools- Instant Payment Notification, however if you pass the IPN url in your API call, the URL in the API call will override what is in the PayPal account. Your API call is found within your software, and there is no general instructions on finding it, as it depends on the design of the software being used and the type of server you have.