Any hint how to optimize operation on leave level, e.i. I have a margin on leave level & product dimension (parent-child) & organization (parent-child), I need to have a margin on the parent, so I wighted margin with a balance on leave level & divide a balance on parent. I need to leave sum aggregation on margin because of writeback.

Code:

 sum(descendants([Product].[Product].allmembers,,leaves),sum(descendants([Organization].[Organization],allmembers,,leaves),&&operation&&))

Thanks,

tomas