PayPal Website Payments Standard - 2012 Guía de usuario descargar pdf (Pagina 10)

Contents

10 June 2012 PayPal Payments Standard Integration Guide

Passing the Aggregate Shopping Cart Amount to PayPal. . . . . . . . . . . . . . . .325

Securing Your Shopping Cart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .326

Implementing the Instant Update API With the Cart Upload Command . . . . . . . . . . .326

About the Instant Update API and the Cart Upload Command . . . . . . . . . . . . .326

Best Practices for Implementing Instant Update . . . . . . . . . . . . . . . . . . . .329

Other Considerations for Implementing Instant Update . . . . . . . . . . . . . . . . .330

Setting Up the Callback for Instant Update . . . . . . . . . . . . . . . . . . . . . . .332

Responding to the Callback for Instant Update . . . . . . . . . . . . . . . . . . . . .333

Chapter 8 Securing Your PayPal Payments Standard Buttons . . . . 337

Creating Protected Payment Buttons on the PayPal Website . . . . . . . . . . . . . . . .338

How Protected Payment Buttons Help Prevent Fraudulent Payments . . . . . . . . .338

Using the Button Creation Tool to Create a Protected Payment Button . . . . . . . . .338

Creating a Protected Payment Button with JavaScript Disabled . . . . . . . . . . . .339

Saving Payment Buttons in Your PayPal Account . . . . . . . . . . . . . . . . . . . . . .340

Reconciling Payments Manually Through Transaction History . . . . . . . . . . . . . . .341

Reconciling Payments Through Instant Payment Notification . . . . . . . . . . . . . . . .342

Protecting Payment Buttons by Using Encrypted Website Payments . . . . . . . . . . . .342

How Encrypted Website Payments Helps Prevent Fraudulent Payments. . . . . . . .343

Public Key Encryption Used by Encrypted Website Payments . . . . . . . . . . . . .343

Setting Up Certificates Before Using Encrypted Website Payments . . . . . . . . . .344

Using Encrypted Website Payments to Protect Your Payment Buttons . . . . . . . . .346

Blocking Unprotected and Non-encrypted Website Payments. . . . . . . . . . . . . . . .348

Chapter 9 Using Your PayPal Account Profile . . . . . . . . . . . . 349

Co-Branding the PayPal Checkout Pages . . . . . . . . . . . . . . . . . . . . . . . . . .349

Overriding Page Styles On Individual Payment Buttons. . . . . . . . . . . . . . . . .350

Overriding Co-Branding Options on Individual Payment Buttons . . . . . . . . . . . .350

Tailoring the Checkout Experience. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .350

Auto Return . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .351

Getting Contact Telephone Numbers . . . . . . . . . . . . . . . . . . . . . . . . . .354

PayPal Account Optional . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .356

Automatic Calculation of Sales Tax . . . . . . . . . . . . . . . . . . . . . . . . . . . . .363

Displaying the Sales Tax that PayPal Calculates During Checkout . . . . . . . . . . .363

Accessing Your Sales Tax Rates in Your Account Profile . . . . . . . . . . . . . . . .364

Setting Up Domestic Sales Tax Rates . . . . . . . . . . . . . . . . . . . . . . . . . .365

Setting Up International Sales Tax Rates . . . . . . . . . . . . . . . . . . . . . . . .367

Resolving Overlapping Sales Tax Rates. . . . . . . . . . . . . . . . . . . . . . . . .367

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