What is JotForm?
JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
At JotForm, we want to make sure that you’re getting the online form builder help that you need. Our friendly customer support team is available 24/7.
We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.
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?
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