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
 
 
Transactions
Authorization & Capture APIs
8
92 March 2008 PayPal Certified Developer Program Study Guide
DoVoid Response
A DoVoid response contains the results of an authorization void.
DoReauthorization Request
Use a DoReauthorization request to request a reauthorization for a given amount of 
money.
DoReauthorization Response
A DoReauthorization response contains the results of the reauthorization.
TABLE 8.4 DoVoid Response Fields
Field Description
AUTHORIZATIONID The authorization identification number specified in the request.
Character length and limits: 19 single-byte characters
T
ABLE 8.5 DoReauthorization Request Parameters
Parameter Description Required?
METHOD Name of API: DoReauthorization Yes
AUTHORIZATIONID The value of a previously authorized transaction identification number 
returned by PayPal.
Character length and limits: 19 single-byte characters maximum
Yes
AMT Amount to authorize.
Limitations: Must not exceed $10,000 USD in any currency. No 
currency symbol. Must have two decimal places, decimal separator 
must be a period (.), and the optional thousands separator must be a 
comma (,).
Yes
CURRENCYCODE A three-character currency code for one of the PayPal-supported 
transactional currencies.
Default value: USD
No
T
ABLE 8.6 DoReauthorization Response Fields
Field Description
AUTHORIZATIONID A new authorization identification number.
Character length and limits: 19 single-byte characters










