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Last updated: June 12, 2026
Returns from the following NVP/SOAP APIs:
DoAuthorizationDoDirectPaymentDoExpressCheckoutPaymentDoReferenceTransactionDoUATPExpressCheckoutPaymentSetExpressCheckoutUpdateAuthorizationThe API request includes a missing, incorrect, or invalid postal code.
The payment process is halted, preventing the customer from finalizing their purchase. This can lead to a poor customer experience and potentially lost sales if the issue is not resolved promptly.
PAYMENTREQUEST_n_SHIPTOZIP.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.