I tried to use paypal express checkout on my Magento 2 (2.3) site. I tried to use sandbox. On the checkout page, I select the paypal express checkout option. I can see the paypal login form popup and can login successfully. But after I click 'Pay' button and the popup is closed then I saw a flash error message on my M2 site.
PayPal gateway has rejected request. PaymentAction of Authorization is not allowed with Unilateral and Non-Credentialed authentication (#10481: Transaction refused because of an invalid argument. See additional error messages for details).
I inspected the log file in var/log/payment.log. I see the debug message but I have no idea what is wrong. Here is the debug message:
[2020-02-01 04:40:06] main.DEBUG: array (
'url' => 'https://api-3t.sandbox.paypal.com/nvp',
'DoExpressCheckoutPayment' =>
array (
'TOKEN' => 'EC-5TP478471D8088941',
'PAYERID' => '5YLR7L3UWZK6Y',
'PAYMENTACTION' => 'Authorization',
'AMT' => '499.00',
'CURRENCYCODE' => 'AUD',
'BUTTONSOURCE' => 'Magento_Cart_Community',
'NOTIFYURL' => 'https://xxx.com.au/paypal/ipn/',
'RETURNFMFDETAILS' => 1,
'SHIPPINGAMT' => '0.00',
'ITEMAMT' => '499.00',
'TAXAMT' => '0.00',
'L_NUMBER0' => NULL,
'L_NAME0' => '(CLEARANCE) Shoei J.O Hawker TC-1 Helmet - Red/Black',
'L_QTY0' => 1,
'L_AMT0' => '499.00',
'BUSINESS' => NULL,
'EMAIL' => 'xxx@yahoo.com',
'FIRSTNAME' => 'First',
'LASTNAME' => 'Last',
'MIDDLENAME' => NULL,
'SALUTATION' => NULL,
'SUFFIX' => NULL,
'COUNTRYCODE' => 'AU',
'STATE' => 'NSW',
'CITY' => 'Melbourne',
'STREET' => 'Second Ave.',
'ZIP' => '3000',
'PHONENUM' => '0489 849 999',
'SHIPTOCOUNTRYCODE' => 'AU',
'SHIPTOSTATE' => 'NSW',
'SHIPTOCITY' => 'Melbourne',
'SHIPTOSTREET' => 'Second Ave.',
'SHIPTOZIP' => '3000',
'SHIPTOPHONENUM' => '0489 849 999',
'SHIPTOSTREET2' => '',
'STREET2' => '',
'SHIPTONAME' => 'First Last',
'ADDROVERRIDE' => 1,
'METHOD' => 'DoExpressCheckoutPayment',
'VERSION' => '72.0',
'USER' => '****',
'PWD' => '****',
'SIGNATURE' => '****',
),
'response' =>
array (
'TOKEN' => 'EC-5TP478471D8088941',
'SUCCESSPAGEREDIRECTREQUESTED' => 'false',
'TIMESTAMP' => '2020-02-01T04:40:05Z',
'CORRELATIONID' => '577d54e9fc5fa',
'ACK' => 'Failure',
'VERSION' => '72.0',
'BUILD' => '54085969',
'L_ERRORCODE0' => '10481',
'L_SHORTMESSAGE0' => 'Transaction refused because of an invalid argument. See additional error messages for details.',
'L_LONGMESSAGE0' => 'PaymentAction of Authorization is not allowed with Unilateral and Non-Credentialed authentication.',
'L_SEVERITYCODE0' => 'Error',
),
)I'd really appreciate if anybody can help. Thanks
