Hello
in my project i am importing data in a smart table from an Excel file .
my smart table is editable but when i try to submit the changes nothing is happening and no batch call is done.
this is my smart table looks like:

end this is my save function : the toast Message is shown but nothing happens . and even when i see the Network , nothing happend
onSave: function () {
var oModel = that.byId("smartTab").getModel();
oModel.setUseBatch(true);
that._setBusy(true);
var fnSuccess = function (data, response) {
that._setBusy(false);
var sMessage = that._getText("changesSentMessage");
MessageToast.show(sMessage);
that._setUIChanges(false);
};
var fnError = function (e) {
that._setBusy(false);
that._setUIChanges(false);
MessageBox.error(e.message);
};
oModel.submitChanges({
success: fnSuccess,
error: fnError
});
that._bTechnicalErrors = false;
},