Welcome What's New Introduction to Amazon FPS Marketplace Quick Start Overview of Amazon FPS Marketplace Quick Start Key Concepts Amazon FPS Marketplace Quick Start Amazon Flexible Payments Service Marketplace Terminology Marketplace Fees Amazon FPS Marketplace Quick Start Integration Request Security Co-Branded User Interface (CBUI) Where the CBUI Fits in the Workflow Recipient Registration on Your Web Site Payment Token Types Amazon FPS API and Co-Branded Service Requests Sandbox Instant Payment Notification Errors Business Considerations WSDLs and Schemas Programming Guide Important Values to Store in Your Database Getting Authorization Charging Marketplace Fees Sending a Co-Branded Service Request Recipient Registration Making Payments Transacting the Payment Reserving a Payment Failed Payment Transactions Notifications Handling Transactions that Don't Return Order Fulfillment Fulfillment Workflow Getting the Transaction Status Completing the Transaction Notification Failed Settlements Order Reversals Canceling a Transaction Refunding a Transaction Other Reversals and Issues Testing Your Applications for Free Testing Signatures Working with Signatures Verifying the ReturnURL and IPN Notifications Soft Descriptor Customization Setting Up Instant Payment Notification E-mail Notification Templates API Reference Common Request Parameters Common Response Elements Error Codes Actions Cancel GetRecipientVerificationStatus GetTokenByCaller GetTransactionStatus Pay Refund Reserve Settle VerifySignature Data Types Enumerated Data Types AccountBalance ChargeFeeTo CurrencyCode FPSOperation InstrumentId InstrumentStatus PaymentMethod RelationType SortOrder TokenStatus TokenType TransactionalRole TransactionStatus Complex Data Types Amount AvailableBalances DebtBalance DescriptorPolicy MarketplaceRefundPolicy OutstandingDebtBalance RecipientVerificationStatus OutstandingPrepaidLiability PrepaidBalance RelatedTransaction StatusHistory Token TokenUsageLimit Transaction TransactionDetail TransactionPart Co-Branded Service API Reference Common Parameters Single-Use Token API Recipient Token API Code Samples Understanding the Amazon FPS Samples Understanding the VerifySignature Sample Locations of the VerifySignatureSample Files in Other Libraries Understanding the IPNAndReturnURLValidation Sample Locations of the IPNAndReturnURLValidation Files in Other SDKs Getting the Samples Appendix: Verifying Responses Signed Using Signature Version 1 Access Key Rotation Considerations with Signature Version 1 Appendix: Moving your Application to Signature Version 2 Differences Between Signing Versions Signature Version 2 FAQ Glossary Document Conventions