Last updated: June 12, 2026
Returns from the DoExpressCheckoutPayment API.
There is no impact on the original transaction. This is a decline on a second attempt at processing the same PayPal transaction.
MSGSUBID or INVOICE_ID to avoid being flagged as a duplicate.The NVP/SOAP API integration method is deprecated. You can find more information about our latest integrations from the following resources:
You can reach out for support at paypal-techsupport.com.