Why did I get API error code 10602?

This error occurs when an authorization has already been completed. The following API calls can produce this error:

• DoAuthorization.
• DoCapture.
• DoReauthorization.
• DoVoid.

Use the GetTransactionDetails API call to check the status of the authorization. If it’s pending, you can try to capture it.

See also:

Authorization and Capture

PayPal NVP and SOAP API Reference Guides.

See the Developer Portal for a complete list of NVP/SOAP API error codes.