2013

About Previous Versions of the API
What’s New in Version 74.0
390 February 01, 2013 SOAP API Developer Reference
New Fields in PaymentDetailsType in DoReferenceTransaction Request
What’s New in Version 74.0
New Behavior of DoExpressCheckoutPayment
By default, the DoExpressCheckoutPayment API operation is idempotent for all API
callers. You can call DoExpressCheckoutPayment up to a maximum of 10 times, and it
returns the same result. The exceptions are when DoExpressCheckoutPayment generates
an error or the token expires.
This functionality only works with version 74.0 or greater. There is no change to
DoExpressCheckoutPayment functionality if you are not updating to the latest version of
the API.
If you update to version 74.0 or higher but want to opt out of this functionality, contact PayPal.
New DoExpressCheckoutPayment Error Code
Field Description
Recurring ns:RecurringFlagType
(Optional) Flag to indicate a recurring transaction. It is one of the following
values:
 Any value other than Y – This is not a recurring transaction (default).
 Y – This is a recurring transaction.
NOTE: To pass Y in this field, you must have established a billing agreement with
the buyer specifying the amount, frequency, and duration of the recurring
payment.
This field is introduced in version 80.0 of the API.
Error
Code
Short Message Long Message Correcting This Error...
13751 Could not retrieve the
original successful
response.
Transaction completed
successfully, but could not
retrieve the original successful
response.