The document provides a comprehensive overview of how PayPal's payment processing works, particularly focusing on the Express Checkout feature. It details the necessary API calls and responses for setting up transactions, including the handling of customer data and billing agreements. The information is aimed at developers and businesses looking to integrate PayPal into their platforms for improved payment processing efficiency.

1. MONETIZE YOUR IDEA!
Jesús Arias
CEMEA Sales Engineer & Business Development
Manager ES&PT
@jAriasRomero

2. HOW DOES PAYPAL WORK?
2

3. TODO COMENZÓ CON…

4. PAYMENT STANDARD

5. PAYMENT STANDARD

6. EXPRESS CHECKOUT
# Instale la comodidad, seguridad y rapidez de
PayPal en su web/mobile web/aplicación
# Habilita todas las plataformas con una única
integración
# Posibilidad de eliminar la necesidad de los
consumidores de introducir información
personal, como la dirección de envío, de
facturación…

7. EXPRESS CHECKOUT

8. PAGUE CON PAYPAL
8

9. FRONT-END API CALLS
Set
Request
SetExpressCheckout
API Server
Response: Token
- Establish PayPal session & return token
- Same call from shopping cart or payment page
- Send relevant transaction details to present on
the PayPal pages
HTTP Redirect
HTTP Redirect
ReturnURL + Token
Get
Merchant
Web Server
- Use session token to pull details from
PayPal (Shipping and Billing Info, etc.)
Request: Token
GetExpressCheckoutDetails
Response: Customer Details
API Server
Do
Request: Final Transaction Details
DoExpressCheckoutPayment
Response: Transaction Results
(Success / Failure)
API Server
- Commits the PayPal transaction
- Options include creating an order,
authorizations, or capturing the funds
from the buyer’s account

10. SETEXPRESSCHECKOUT
NVP Request:
USER=seller_1327401289_biz_api1.paypal.com
&PWD=1327401311
&SIGNATURE=A61S88UsB8FlgfezPzbu7yLEKPc7Aa08pbos-lPn1cpPLkfdF0fpr9H4
&VERSION=84.0
&METHOD=SetExpressCheckout
&RETURNURL=http://d-dub-00422799/globaltest/index.php?action=Ecreturn
&CANCELURL=http://d-dub-00422799/globaltest/index.php?action=Eccancel
&PAYMENTACTION=Sale
&L_PAYMENTREQUEST_0_NAME0=Montadito de queso
&L_PAYMENTREQUEST_0_NAME1=Montadito de jamon
&L_PAYMENTREQUEST_0_DESC0=normal
&L_PAYMENTREQUEST_0_DESC1=integral
&L_PAYMENTREQUEST_0_AMT0=1.50&L_PAYMENTREQUEST_0_AMT1=2.00
&L_PAYMENTREQUEST_0_NUMBER0=kfgsdf
&L_PAYMENTREQUEST_0_NUMBER1=sdfsdF
&L_PAYMENTREQUEST_0_QTY0=1
&L_PAYMENTREQUEST_0_QTY1=1
&PAYMENTREQUEST_0_AMT=3.50
&PAYMENTREQUEST_0_CURRENCYCODE=EUR
&SHIPTONAME=Jesus Arias
&SHIPTOCITY=Alcobendas
&SHIPTOCOUNTRY=ES
&SHIPTOSTATE=Madrid
&SHIPTOZIP=28108
NVP Response:
TOKEN=EC-8W685234XG756154V
TIMESTAMP=2013-12-10T09:22:35Z
CORRELATIONID=ac6073146df40
ACK=Success
VERSION=84.0
BUILD=8725992

11. DOEXPRESSCHECKOUT
NVP Request:
USER=seller_1327401289_biz_api1.paypal.com
&PWD=1327401311&SIGNATURE=A61S88UsB8FlgfezPzbu7yLEKPc7Aa08pbos-lPn1cpPLkfdF0fpr9H4
&VERSION=84.0
&METHOD=DoExpressCheckoutPayment
&TOKEN=EC-8W685234XG756154V
&PAYMENTACTION=Sale
&PAYERID=Y26PWAD9435W4
&AMT=3.50
&CURRENCYCODE=EUR
NVP Response:
TOKEN=EC-8W685234XG756154V
SUCCESSPAGEREDIRECTREQUESTED=false
TIMESTAMP=2013-12-10T09:32:47Z
CORRELATIONID=e5994cc07104f
ACK=Success
VERSION=84.0
BUILD=8725992
TRANSACTIONID=0VG584650H1775049
TRANSACTIONTYPE=expresscheckout
PAYMENTTYPE=instant
ORDERTIME=2013-12-10T09:32:46Z
AMT=3.50
…

12. EXPRESS CHECKOUT SHORTCUT
12

13. PAGO EN UN CLIC
13

14. PRIMERA COMPRA [1/5]
El consumidor
puede elegir el
método de
pago

15. PRIMERA COMPRA [2/5]
Creación de un
Billing
Agreement
para que el
consumidor no
tenga que ser
redirigido a
PayPal en las
siguientes
compras

16. PRIMERA COMPRA [3/5]

17. FIRST PURCHASE [4/5]
Información sobre
el acuerdo que
está estableciendo

18. FIRST PURCHASE [5/5]

19. FOLLOWING PURCHASES

20. FOLLOWING PURCHASES [1/2]
20
Confidential and Proprietary

21. FOLLOWING PURCHASES [2/2]
21
Confidential and Proprietary

22. REFERENCE TRANSACTIONS (PRIMERA COMPRA)
SETEXPRESSCHECKOUT
NVP Request:
USER=seller_1327401289_biz_api1.paypal.com
&PWD=1327401311
&SIGNATURE=A61S88UsB8FlgfezPzbu7yLEKPc7Aa08pbos-lPn1cpPLkfdF0fpr9H4
&VERSION=84.0
&METHOD=SetExpressCheckout
&CURRENCYCODE=EUR
&PAYMENTACTION=Sale
&BILLINGTYPE=MerchantInitiatedBilling
&RETURNURL=http://d-dub-00422799/globaltest/index.php?action=SETBA_Return
&CANCELURL=http://d-dub-00422799/globaltest/index.php?action=SETBA_cancel
&BILLINGAGREEMENTDESCRIPTION=Insurance
&PAYMENTTYPE=Any
&AMT=120.00
&PAYFLOWCOLOR=3366FF
&NOSHIPPING=1
&L_NAME0=Car Insurance
&L_DESC0=1 year
&L_QTY0=1
&L_AMT0=120.00
&L_NUMBER0=asfsdfsad
NVP Response:
TOKEN=EC-565768035Y217624F
TIMESTAMP=2013-06-04T16:32:48Z
CORRELATIONID=18590c678e186
ACK=Success
VERSION=84.0
BUILD=6118442

23. REFERENCE TRANSACTIONS (PRIMERA COMPRA)
DOEXPRESSCHECKOUT
NVP Request:
USER=seller_1327401289_biz_api1.paypal.com&PWD=1327401311&SIGNATURE=A61S88UsB8Flg
fezPzbu7yLEKPc7Aa08pbos-lPn1cpPLkfdF0fpr9H4
&VERSION=84.0
&METHOD=DoExpressCheckoutPayment
&TOKEN=EC-565768035Y217624F
&PAYMENTACTION=Sale
&PAYERID=JDRRFSMSWRP32
&AMT=120.00
&CURRENCYCODE=EUR
NVP Response:
TOKEN=EC-565768035Y217624F
BILLINGAGREEMENTID=B-4B007796F2383734B
SUCCESSPAGEREDIRECTREQUESTED=false
TIMESTAMP=2013-06-04T16:35:22Z
CORRELATIONID=3f5b3033b5df
ACK=Success
VERSION=84.0

24. REFERENCE TRANSACTIONS (SIGUIENTES
COMPRAS)
DOREFERENCETRANSACTIONS
NVP Request:
USER=seller_1327401289_biz_api1.paypal.com
&PWD=1327401311&SIGNATURE=A61S88UsB8FlgfezPzbu7yLEKPc7Aa08pbos-lPn1cpPLkfdF0fpr9H
4&VERSION=84.0
&METHOD=DoReferenceTransaction
&PAYMENTACTION=Sale
&PAYMENTTYPE=Any
&AMT=15.00
&REFERENCEID=B-4B007796F2383734B
&CURRENCYCODE=EUR
NVP Response:
BILLINGAGREEMENTID=B-4B007796F2383734B
TIMESTAMP=2013-06-04T17:14:41Z
CORRELATIONID=d7c97bf35c46
ACK=Success
VERSION=84.0
Buyer
Buyer
BUILD=5908853
TRANSACTIONID=0YA18374BM037072K
TRANSACTIONTYPE=merchtpmt
PAYMENTTYPE=instant
…
Merchant
Merchant
PayPal API
PayPal API
DoReferenceTransaction
(performed on demand)
Returns transaction result
PayPal.com
PayPal.com

25. ADAPTIVE PAYMENTS
# LOS PAGOS PUEDEN SER SIMPLES, ENCADENADOS O
PARALELOS
25

26. IPN

27. EL FUTURO DE LOS PAGOS

28. NEW DEVELOPER SITE

29. NEW DEVELOPER SITE
https://developer.paypal.com

30. GRACIAS!!!
Jesús Arias
CEMEA Sales Engineer & Business
Development Manager Spain &
Portugal
jariasromero@paypal.com
+34 917 901 071
+34 673 497 734