Hi Nitin,
did you enhance this component or is it still the default SAP behaviour? The underlying problem seems to be, that the values are only set on the UI and are not correctly transported to the BOL. This happens, for example, if a component enhancement is not implemented correctly.
If you are unsure if a component enhancement is the reason for the problem set the user parameter WCF_IGNORE_ENHANCEMT to A and check if the problem still occurs. If not, check the enhancements made for the component (e.g. methods DO_PREPARE_OUTPUT).
Christian