Contents
vi Payflow Link Fraud Protection Services User’s Guide
About PayPal’s Transaction Database. . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Collecting Customer Transaction Data, Option 1 . . . . . . . . . . . . . . . . . . . . . . 64
Using the Payflow Link Order Form . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Collecting Customer Transaction Data, Option 2 . . . . . . . . . . . . . . . . . . . . . . 66
Collecting Data on Your Web Page and Posting to the Payflow Link Server . . . . . . 66
Optional Transaction Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Returning Data to Your Web Site . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Retaining Session Data and other Temporary Information . . . . . . . . . . . . . . . 71
Specifying How Data is Returned to Your Web Site . . . . . . . . . . . . . . . . . . . 71
Data Returned by the Post and Silent Post Features . . . . . . . . . . . . . . . . . . . . 72
Values Returned When ECHODATA is False . . . . . . . . . . . . . . . . . . . . . . 73
Values Returned When ECHODATA is True. . . . . . . . . . . . . . . . . . . . . . . 74
Parameters That Specify Payflow Link Operation . . . . . . . . . . . . . . . . . . . . . . 75
Appendix C About the Confirmation Email Messages . . . . . . . . . .77
Example Customer Email Message . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Example Merchant Email Message . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Fields Returned in the Confirmation Email Message . . . . . . . . . . . . . . . . . . . . 78
Transaction Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Billing Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Shipping Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Additional Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Appendix D Payflow Link Transaction Types. . . . . . . . . . . . . . .81
Appendix E Fraud Filter Reference. . . . . . . . . . . . . . . . . . . .83
Filters Included with the Fraud Protection Services . . . . . . . . . . . . . . . . . . . . . 83
Filters Included with the Basic Fraud Protection Services Option . . . . . . . . . . . . 83
Filters Included with the Advanced Fraud Protection Services Option . . . . . . . . . 84
About the Fraud Risk Lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Filters Applied After Processing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Unusual Order Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Total Purchase Price Ceiling Filter. . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Total Item Ceiling Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Shipping/Billing Mismatch Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Product Watch List Filter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
High-risk Payment Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
AVS Failure Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87