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What is causing users to get a Security error message when they try to submit payment?Asked by brendam1ller on February 13, 2014 at 02:17 PM
A user received the following error when trying to submit a payment using an online form:
Security header is not valid
Can someone assist me in resolving whatever the issue might be?
message security error online form
This is an issue with your API Credentials in the Paypal Pro payment field. Please make sure that you are entering the correct API username, password, and signature. There's a test integration button in the Payment Wizard, I would suggest clicking that one to test out if the integration is working or not.
Here's how you can get your Paypal Pro API Credentials: https://developer.paypal.com/docs/classic/api/apiCredentials/#creating-classic-api-credentials