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PayPal Configuration Error - Security header is not valid

When testing your uWalk - PayPal setup, if you see an error message such as:

Error 10002: Security header is not valid

That error usually indicates an issue with the login information you are using for your PayPal connection. On the uWalk PayPal configuration UI, try removing your PayPal credentials and then re-enter them. To make sure there are no typos or unexpected characters/line feeds... you might want to paste your credentials into Notepad first... then cut-n-paste them into the uWalk PayPal configuration UI.

See uWalk and PayPal for more information about configuring the uWalk and PayPal interface.

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