vApp powerOff/Stopped operation using REST

Hi,

I am trying to powerOff vApp using vCloud rest API.

When hit the vApp power Off URI (https://vcd_ip/api/vApp/vapp-vapp_key/power/action/powerOff)

vApp status become Partially Running and VM status become partially powered Off .

As we do same operation from vCD UI we get expected result ( vApp status - Stopped , VM status -  powered Off ).

Am I doing anything wrong ??