PaymentsOS Integration

• What IP Addresses should I Have Whitelisted?
• Complying with GDPR
• Can I store and reuse CVV?
• What is the importance of the API version we use?
• How do I to configure a Webhook endpoint?
• Can I store and reuse credit card details?
• How do I create a request that will match with multiple provider's requirements? 
• How should I collect and tokenize a customer's card information?
• Why is the vendor field absent from the token object?
• Where can I get the root certificate for the PaymentsOS URL?
• Where can I see more info about the payment resource?
• How do I prevent duplicate requests?
• What should I send Customer Support for troubleshooting?
• What's the difference between synchronous and asynchronous payment flows?
• Why do I see gibberish in the PaymentsOS response?
• What is the ZOOZ Secure Fields Solution for iFrame Checkout Pages?