Passing multiple entries through Gateway to HANA from SAP Ui5

Wrapper class has been written in gateway end as part of OData to expose xsOData service (which consumes from SAP HANA). From SAP Ui5, i am trying to make a POST call with multiple entries on a single Entity as follows:-

var aBatchOperation=[];

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

  var obj={};

  var oModel = new sap.ui.model.odata.ODataModel("/sap/opu/odata/SAP/ZGMM_SCT_WRITE_HANA_SRV/");

  var selectedIndex = table.getSelectedIndices()[i];

  var sPath = table.getRows()[selectedIndex].getBindingContext().sPath;

  var exceptionRecord = table.getModel().getProperty(sPath);

  obj = {

  "MATNR" : exceptionRecord.MATNR,

  "MAKTX" : exceptionRecord.MAKTX,

  "ZZSTROKE" : exceptionRecord.ZZSTROKE,

  "BEGRU" : exceptionRecord.BEGRU,

  "TRAGR" : exceptionRecord.TRAGR,

  "ZZSUPPLYCHATYPID" : exceptionRecord.ZZSUPPLYCHATYPID,

  "DEFAULTSCT" : exceptionRecord.DEFAULTSCT

  }

  var contactBatchOperation = oModel.createBatchOperation("ack_mara_sct", "POST", obj);

  aBatchOperation.push(contactBatchOperation);       

  }

  oModel.addBatchChangeOperations(aBatchOperation);

  this.busyDialog.open();

  oModel.submitBatch(jQuery.proxy(this.handleBatchRead, this), function(oError)

  {

  this.busyDialog.close();

  alert("Service Call Failed");

  },

The above snippet is working fine for a Single data record, but not for multiple entries and throwing an error "HTTP request failed"

Does HANA have any restriction on multiple data POST ?

Please provide suggestion.

Thanks in Advance,

Hemagiri