When REST Invoke API call is tested in DevTest, sometimes get the "HTTP 401 Unauthorized" response.
Example API call is "http://host:port/api/Dcm/VSEs/VSE/"
The API call can be tested from Postman, DevTest, SoapUI..
Here are few causes could give the HTTP Unauthorized response:
. Incorrect header information.
. Incorrect Port number.
Providing the correct Authorization information/Port number should resolve the issue.