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up the pay-pal advance in magento . I have fill all the credentials in magento admin . BUt when i go to frontend and click pay-pal button it gives
PayPal gateway has rejected request. Security header is not valid (#10002: Security error
i have googled a lot and found some suggestions like
Remove API Username, API Password and API Signature from Admin->configuration->Paypal->API/Integration Settings. clear cache and test again
i have tried all these but it still gives the same error.
Please suggest me what can be the issue
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Cause & Resolution The error message means that the API credentials you have entered are not exactly the same as what they have on file for you. To correct, go to Settings > Card Options > PayPal you should see the API credentials there, compare them to your PayPal ones.
Gateway rejections are blocked by your gateway settings, while declines are blocked by the customer's bank. Learn more about declines. A gateway rejection indicates that a transaction or verification request did not pass certain settings or rules in your Braintree gateway.
If you get the error message “security header is not valid” when checking out at your site running Paid Memberships Pro, this is a PayPal error indicating that the API credentials are incorrect.
The Security header is not valid error is only caused for two reasons:
Wrong credentials Make sure that you've put your API Username, API Password and API Signature correctly. Sometimes it happens that during copy and paste there is accidently a space added, this would trigger this error. Doublecheck this settings in the SDK or in the admin panel of your third party shopping cart.
Wrong Endpoint This error would come up if you send the data to the wrong endpoint. Make sure that you sending the live credentials and data to our live endpoint. When you want to test your store make sure that you use our test endpoint and the credentials from your sandbox test account. If you are using a third party shopping cart, make sure that your store is running in test or live mode, regarding which credentials you are using.
You can check for your credentials here too:
FOR LIVE
https://api-3t.paypal.com/nvp?&user=xxxxxxxxxx&pwd=xxxxxxxxxx&signature=xxxxxxxxxx&version=70.0&METHOD=SetExpressCheckout&RETURNURL=http://www.paypal.com/test.php&CANCELURL=http://www.paypal.com/test.php&PAYMENTACTION=Sale&AMT=50&CURRENCYCODE=USD
FOR SANDBOX
https://api-3t.sandbox.paypal.com/nvp?&user=xxxxxxxxxx&pwd=xxxxxxxxxx&signature=xxxxxxxxxx&version=70.0&METHOD=SetExpressCheckout&RETURNURL=http://www.paypal.com/test.php&CANCELURL=http://www.paypal.com/test.php&PAYMENTACTION=Sale&AMT=50&CURRENCYCODE=USD
Just Substitute the user, pwd and signature and enter in your browser. You should get ACK = SUCCESS if you have input your credentials correctly.
You can also get your credentials here : https://www.paypal.com/cgi-bin/webscr?cmd=_get-api-signature&generic-flow=true
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This error simply means your credentials are wrong. Please check with the credentials. If you are using sandbox then you are supposed to provide facilitator related credentials.
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