How to get all children and grandchildren keys down of a BI hierarchy node.

Hi Colleagues,

I have to fill all dependent keys inside of a BI hierarchy node into an internal table for using in update rules.

I'm shure, there are some miraculousness functions.

For input, I have hierachy name and node name somewhere down of the top level.

For output, I need all keys and if so intervall definitions, they are definde in the node or/and in all lower layed nodes.

Who can give me the names of the function?

Thanks and regards,

Wolfgang