I have builted a report the report is as followed
"CHANNEL_XXXXXXXXX, System-defined member list Lev1,Channel"
how can excluded the "Atl Hierarchy" which is also at Lev 1
Used advanced in selection and say not Descendants of Alt Hierarchy.
Selecting Members with Advanced Expressions
I tried what you said
and when I run this I am getting an MDX Error
It is not Union. It should be AND for Lev1, Channels