Ajax : formhandler exceptions are lost when the control comes back to the page

Question

It would be very helpful if someone can share any info/probable solution for an issue i am facing, which is, after submitting the request to process, if an exception is generated and a new FormException is created and added to the request so that it can be read and displayed in UI However when we read formHandler.formExceptions in the jsp the value is coming out as null, i.e. the exception generated in the formhandler is lost due to which we are unable to message the end user of the error.

The submit method is invoked as below:

A.jsp has ajax call and includes B.jsp:

$(function() {
    $("#previewAddToSbBtn").click(function() {
     $.ajax({
      type: "POST",
      url: action,
      data: params,
      success: function() {
      //alert("Item has been added");
      $("#qp_content").load("/some.jsp?);
     }
    });
});

B.jsp has the actual submit button and calls FormHandler:

&ltdsp:input type="hidden" bean="FormHandler.addItemToOrder" value=""/&gt
&lta id="previewAddToSbBtn" title="Add to Shopping Bag" href="#">add to cart&gt &lt/a&gt&ltbr/&gt

Any help/info is greatly appreciated.