A successful transaction has already been completed for this token.

[wdkstudio]

Hi,
having just upgraded the site to 1.5.1, PayPal express check out appears to be trying to take multiple payments.

Request Parameters: {DoExpressCheckoutPayment}
Array
(
[AMT] => 50.68
[ITEMAMT] => 42.00
[SHIPPINGAMT] => 8.68
[L_NUMBER0] => CMC A004
[L_NAME0] => 1:18 / 1:24 Collector's Showcase [1054]
[L_QTY0] => 1
[L_AMT0] => 42.00
[ALLOWEDPAYMENTMETHOD] => InstantPaymentOnly
[SHIPTONAME] => xxxxxxxx
[SHIPTOSTREET] => xxxxx
[SHIPTOSTREET2] => xxxxx
[SHIPTOCITY] => xxxxx
[SHIPTOSTATE] => xxxxx
[SHIPTOZIP] => xxxxx
[SHIPTOCOUNTRYCODE] => GB
[BUTTONSOURCE] => ZenCart-EC_us
[RETURNFMFDETAILS] => 0
[CUSTOM] => EC-1049-1382655521
[INVNUM] => 1049-1382655521-[AuthenticModelscouk]
[TOKEN] => EC-4HP065293V255523V
[PAYERID] => FKT2FRUWALDVQ
[PAYMENTACTION] => Sale
[NOTIFYURL] => http://authenticmodels.co.uk/ipn_main_handler.php
[METHOD] => DoExpressCheckoutPayment
[CURRENCYCODE] => GBP
[USER] => xxxxxx.com
[PWD] => ****************
[VERSION] => 61.0
[SIGNATURE] => ****************************************************qsOh
)


Response:
Array
(
[TIMESTAMP] => 2013-10-24T22:58:42Z
[CORRELATIONID] => c698509a968e3
[ACK] => Failure
[VERSION] => 61.0
[BUILD] => 8252112
[L_ERRORCODE0] => 10415
[L_SHORTMESSAGE0] => Transaction refused because of an invalid argument.
See additional error messages for details.
[L_LONGMESSAGE0] => A successful transaction has already been completed
for this token.
[L_SEVERITYCODE0] => Error
[CURL_ERRORS] =>
)

Any suggestions please?

Thanks

[twitchtoo]

Are there any informative PayPal debug files in your log directory?

[frank18]

Try this thread:

http://www.zen-cart.com/showthread.p...t=paypal+10415