About REST API problem

About REST API problem

I am trying to create new request with rest api as per you documentation but i am always getting this reposne
 
<operation name=""><result><status>Failed</status><message>No operation name specified in request. Invalid request.</message></result></operation>
 
 
this is the URL i am using :
 
and this is the documentatin i am following to process some thing
 
 
please provide us if anybody have code in c# that would be great help
 
 

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