1) What exactly are all the APIs that should be hit for an entire cycle of a successful transaction? 2) What should be the order/hierarchy of those API Callouts? (Which should be called first, between, and next, and last?) 3) Is there any API offered by PayPal that auto-populates debit/credit card details instead of having to redirect to paypal window/terminal and enter details manually? (An API Enable to send card details over a callout).
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