There is a bug in odl netconf for network element with custom yang model which contains RPC call.
When you trying to invoke rpc method via api call like "POST /rests/operations/{yang_module}:{method_name}", you expecting to receive response with body declared in output region of rpc call in yang model. For example:

  rpc software-check {
    description
      "Install a previously downloaded software package.";
    input

{       uses check-input;     }

    output

{       uses check-output;     }

  }

Response body have to represent a structure declared in "check-output" grouping, BUT body is EMPTY.

 

 

Version  ODL:   chlorine-SR1 (0.17.1), phosphorus-SR1 (0.15.1)