response.status_code as 403 - is it connected with Trial or Privillage issue

[Daniel K]

Im trying to get the tests under a Issue using 

   curl -H "Content-Type: application/json" -X GET -u admin:admin http://yourserver/rest/raven/1.0/api/testexec/TEST-123/test

I have replaced admin, yourserver and TEST-123 with its corresponding value specific to me. 

Im getting response.status_code as 403. 

I doubt since i use Xray trial version I do not have sufficient privileges to access the requested. Is this true or the reason could be different. Please share your thoughts