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PayPal - Errors - Security header is not valid
PayPal - Errors - Security header is not valid

What happens when I get the following error when using the PayPal integration - 100002 Security error - Security header is not valid

Stephen avatar
Written by Stephen
Updated over a week ago


When using the PayPal integration in KennelBooker, there are a few potential error codes that may appear when first using the new payment pages.

The most common error is when PayPal returns the following error “10002: Security error - Security header is not valid".

When communicating with PayPal they require three pieces of information to be sent across to them, these are your;

  1. API Username 

  2. API Password

  3. API Signature 

Sometimes when copying over your details you might accidentally not copy over the full stings or you may accidentally add a space. 

Double check these settings in the Payments tab in the settings area of KennelBooker.

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