Tracking payments that coming with 'PAYMENT.SALE.PENDING' status
I am implementing the payment gateway for a web application with .NET and I am using the Paypal Webhooks for it. There is a topic about which the documentation could not be found and it refers to the pending payments (PAYMENT.SALE.PENDING) that can be generated for different reasons. My questions are:
1. How to follow up on these payments?
2. How do you know that these payments went from PENDING to COMPLETED?
3. What is the event that the webhook would issue at the moment when the payment status changes from PENDING to COMPLETED?
4. Can the payments that remain in PENDING be canceled or are they automatically canceled by paypal?