How do I resolve the "Security header is not valid" error message?
This error message means your Open Dining 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.