Hello Prasath
Based on your description, it seems that you're having the problem described in the following KBA:
1773641 - Web Dynpro ABAP based Leave Request use in UWL
Please check to see if the task types match to your scenario, and if that is the case apply the resolution mentioned there and re-register your UWL Connector to recreate the XML file from the ABAP system.
To ensure that the changes are taken into effect on runtime within UWL, also check KBA 2141647 and restart the UWL application.
Kind regards,
Armando
