400: Bad Request" on calling WebSecvice using Nop WebService Plugin

Hi,

I am getting error "400: Bad Request" on calling WebSecvice using Nop WebService Plugin.

Url opens in browser without operation name but when specifying operation/function name getting above error.

URL:  

It works without operation

http://mydomain.com/Plugins/Misc.WebServices/Remote/NopService.svc



When calling with Function name not working

http://mydomain.com/Plugins/Misc.WebServices/Remote/NopService.svc/GetStates


It also works in wcftestclient.

Without action name it works in jQuery as well but do not work when calling with operation name.


Please help me to resolve this issue.



Thanks,
Prem