Index A account status adding a bank account address verification testing API server for Sandbox 1, 2 API testing B bank account adding for Canadian test accounts for German test accounts for UK test accounts Bank Account Number billing a customer BSB Number Business account Buy Now C Canadian bank account info credit card validation testing D delete test account E eCheck email in Sandbox errors, testing F fraud detection in Sandbox G German bank account info I instant payment notification simulator Instant Payment Notification. See IPN. Institution Number Integration Center IPN ipn_test variable technical overview testing in Sandbox M manually created test accounts 1, 2 N name-value pair (NVP) APIs negative testing P paying PayPal Developer Network PDN pending transactions Personal account positive test preconfigured test accounts R recurring payments, testing Request Money testing reset test account reset test accounts S Sandbox API server for 1, 2 email SDKs Send Money simulator, instant payment notification Social Security Number for Website Payments Pro 1, 2 sort code for Canada, Germany, and UK source code samples for IPN T test accounts test email test tools test_ipn testing address verification APIs 1, 2 billing a customer Buy Now credit card validation eCheck IPN negative NVP paying Send Money verifying a payment verifying a refund Website Payments testing recurring payments Transit Number U UK bank account info W Website Payments Website Payments Pro 1, 2 Website Payments Pro test accounts