Study Guide
Table Of Contents
- PayPal Certified Developer Program Study Guide
- Contents
- List of Tables
- Online Payment Processing
- Internet Security and Fraud Prevention
- Why Every Business Should Be Concerned About Internet Fraud
- Liability for Internet Fraud
- Internet Fraud: What It Is and How It Happens
- Who Is at Risk for Online Fraud
- Reducing Exposure to Fraud
- What Banks and Card Associations Are Doing to Prevent Online Credit Card Fraud
- What PayPal Is Doing to Protect Your Business Against Fraud
- Disclosure and Compliance
- PayPal Fraud Protection Services
- Review Questions
- Getting Started With Account Setup
- API Credentials
- Name-Value Pair (NVP) API
- Express Checkout
- Direct Payment API
- Transactions
- Sandbox Testing
- Answers to Review Questions
- General Reference Information
- Glossary
- Index
PayPal Certified Developer Program Study Guide March 2008 85
Direct Payment API
Authorization & Capture
7
Authorization & Capture
PayPal assumes that at the end of the checkout process, the merchant makes a final sale and
payment transaction through PayPal. If, at the point of sale, the merchant does not know the
complete cost of the order—for example, if the shipping, handling, and tax are not precisely
known or there is an upsell—a transaction can be authorized that can be captured later, with
Authorization & Capture.
PayPal uses Authorization & Capture in both Direct Payment and Express Checkout.
For more information about Authorization & Capture, see “Authorization & Capture APIs” on
page 87.
Review Questions
Answers to review questions are in Appendix A, “Answers to Review Questions.”
1. True or false: If the merchant’s application uses Direct Payment, the name “PayPal” does
not appear on the customer’s credit-card statement.
2. How does PayPal determine if the CVV2 parameter is required in the DoDirectPayment
request?