The "Security header is not valid" error means your Paytronix Online Ordering account is not properly configured to process credit card transactions. This is typically caused by incorrect or incomplete payment gateway credentials entered under Order Payment in your Dashboard.
Steps to Resolve
The steps to resolve this error will vary depending on which payment gateway you are using. In all cases, start by navigating to Order Payment from your Dashboard and verifying your gateway settings.
PayPal Pro
Make sure you are using live credentials, not credentials from the PayPal Sandbox environment.
Verify that your PayPal information was entered correctly by following the steps in How do I connect PayPal Pro to my Paytronix Online Ordering account?
If you believe your credentials are correct but the error persists, try re-keying your PayPal API credentials within PayPal by taking the following steps:
Click Profile
Click API Access
Click View API Certificate
Click Remove to delete your current API information
Once removed, reset your API information by following the steps in How do I connect PayPal Pro to my Paytronix Online Ordering account?
Other Payment Gateways
Make sure your gateway is not set to Test mode and that all credentials have been entered accurately. Try re-entering your information carefully to rule out any typos or copy/paste errors. For gateway-specific setup instructions, see:
How do I connect Authorize.Net with my Paytronix Online Ordering account?
Which Payment Gateways do you support for Online Ordering?
Still Need Help?
If you have verified your credentials and the error persists, please contact Paytronix Support.