Cascading/Nested LOV in Derived table subquery

Hello All,

I have created Cascading LOV's in universe and have applied them in the subquery in derived table. The query works fine in Universe query panel however it gives error when the query is ran in Web Intelligence.

Error: "Cannot build the query or generate the report. (WIS 30351) (WIS 30351)"

Is there any step I am missing or any settings?

I also tried another approach by removing LOV's from the prompts in subquery of derived table and added a 2nd query in Webi with Cascading LOVs but the prompts are not merging.

Do you know of any other approach or how can we resolve this issue?

Thanks!