🤔 Problem
I have added my PayPal information, but when I run a test reservation, it says “PayPal error: Security header is not valid”.
🌱 Solution
This error normally happens only when you have not entered your API credentials correctly, for example if you have entered the sandbox API instead of the live API. You should retype your API Username, Password, and Signature and make sure that you have correctly set “Use PayPal Sandbox” in HBook > Payments.
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Please check again your Username, Password, and Signature
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Please make sure that you are not mixing Live and Sandbox credentials
📎 Related articles
- Can I accept credit or debit card payments with PayPal?
- How to find my Live PayPal username, password and signature? Where can I find my PayPal API credentials?
- How to test payments with PayPal? What is Sandbox mode? How to create a Sandbox account?
- PayPal : Can a customer pay without a PayPal account?
- Which type of PayPal account do I need?
- PayPal error: Security header is not valid