GetSearchResults Samplecode is Running.. 
stdClass Object
(
    [response] => stdClass Object
        (
            [rmsg] => Authentication Failed
        )

)
[401] Error connecting to the API (https://api.cybersource.com/tss/v2/searches/d43b7a9c-538c-4d23-ae0e-bcbd2f60cbe2)