Hi Susmita
I think that there is no how to achieve what you're relating in this question. Because one UWL tasks belongs to a single Task Type. Meaning that one UWL workitem will belong to TS17900100 or TS90000088, where each of them have its own object where the information related to it is stored (This can be checked at SW01 at the backend).
Once a UWL task belongs to a single Task Type, I don't see any possibility of a single UWL task having information coming from two different task types.
Please check based on this and update us in case my understanding is not correct.
Thanks and kind regards,
Armando Zaro