Hi Ramesh,
You don't have error when you fill it_params, This means your entity is not getting created when Parameter values are not Passed.
This is because of the coding you did in API of your Object or CREATE_OBJECT method of Genil.
There you might be checking if Value is Initial and if it is Initial you are not allowing to create entity.
this is a problem in your GENIL/API logic if im right.
Thanks and Regards,
Pratheek