This has turned out to be quite a lengthy question, so thank you in advance to all those who give up their time to read it and comment/answer :)
This question already has answers here: Is it bad to not unregister event handlers? (2 answers) Closed 9 years ago.
I have created a paypal Unsubscribe button in Java , when user click on it and after login to paypal account and unsubscribes , the paypal posts on the notifyurl successfully and i am able to update m
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