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 139
Sandbox Testing
Testing Error Conditions
9
When you try to process the transaction, the following CVV error message appears from 
Virtual Terminal:
N OTE: Other errors are also reported in addition to CVV code N. 
Testing a CVV Code Using DoDirectPayment
The following example sets up testing for CCV code N in DoDirectPayment, which 
indicates a mismatch in the card-validation code:
METHOD=DoDirectPayment&
CREDITCARDTYPE=VISA&
ACCT=4683075410516684&
EXPDATE=112007&
CVV2=116&
AMT=1.55&
FIRSTNAME=Designer&
LASTNAME=Fotos&
IPADDRESS=255.55.167.002&
STREET=1234%20Easy%20Street&
CITY=San%20Jose&
STATE=CA&
COUNTRY=United%20States&
ZIP=95110&
COUNTRYCODE=US&
SHIPTONAME=Louise%20P.%20Flowerchild&
SHIPTOSTREET=1234%20Easy%20Street&
SHIPTOSTREET2=Apt%2022%20bis&
SHIPTOCITY=New%20Orleans&
SHIPTOSTATE=LA&
SHIPTOCOUNTRY=US&
SHIPTOZIP=70114&
PAYMENTACTION=Authorization&
FIZBIN=foo&
VERSION=3.3&
USER=username&
PWD=password&
SIGNATURE=signature










