I installed the API but it did not work
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Get this message:
SetExpressCheckout API call failed.
Detailed Error Message: Security header is not valid
Short Error Message:
Error Severity Code: ErrorWaht means security header?
Domain is https://lithoshotel.com/online-booking/
Thanks
Christoph
Viewing 6 replies - 1 through 6 (of 6 total)
Viewing 6 replies - 1 through 6 (of 6 total)
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