How to submit multiple information in one request - having issues in passing data

Hello Everyone,

I tried creating a service that use Deep entity to post some data to SAP. That works well from test service option, but when i am trying to code from java script it is failing and getting" Http Request failed "

Following is the snippet i use for my testing to pass the data, is there anything wrong with my passing of parameters, please suggest.

var itemO = [{ID:24, Name:"xyz"}, {ID:45,Name:"tze"}];

var itemT = [{ID:24, Name:"xyz"}, {ID:45,Name:"tze"}];

var head = [{ID:24, Name1:"xyz", Name2:"abc"}];

var headerCont = [{Header:head, HeadItemT:itemT, HeadItemO:itemO}]

alert(requestUri);

var request = 

{ headers: {"X-Requested-With": "XMLHttpRequest", 

                "Accept": "application/atom+xml,application/atomsvc+xml,application/xml", 

                "Content-Type": "application/atom+xml", 

                "DataServiceVersion": "2.0" }, 

requestUri: requestUri, 

method: "POST", 

user: "user123", 

password: "welcome", 

data: headerCont }; 

// Send the request and define callback methods.

OData.read(

requestUri,

function (data) {

var html = "";

for (var i = 0; i < data.results.length; i++) {

alert("Hello" + data.results[i].ID;

}

document.getElementById("container").innerHTML = html;

},

function (err) {

alert("Error occurred " + err.message);

}

);

}