How do I resolve the "Security header is not valid" error message?

This error message means your  Paytronix Online Ordering account is not properly configured to process credit card transactions.

To fix this error

Verify a few details under the  Order Payment section of the Dashboard:

1. Make sure you are using  live credentials, and not the credentials from PayPal Sandbox
2. Make sure you entered the correct PayPal information by following the PayPal Pro setup instructions
 

If you believe your API information is being entered correctly, please try re-keying your PayPal API credentials by taking the following steps within PayPal:
 

• Click Profile
• Click API Access
• Click View API Certificate
• Click the Remove button

After deleting your current API information, try resetting your API information by following these steps.