Getting error while adding Netscaler with the new 10.1 API

[Syed Ahmed]

Hi,

I am trying to move the Netscaler to the 10.1 Nitro API and while using 
the new API I am getting the following error when adding Netscaler device

PKIX
 path building failed:
sun.security.provider.certpath.SunCertPathBuilderException: unable to
find valid certification path to requested target


I have changed to use HTTP instead of HTTPS in nitro to temporarily work 
around this problem. Is HTTPS absolutely required for communication with 
external devices? or does my workaround is a valid fix?

Thanks,
-Syed