I have an OLAP multidimensional cube and I changed the UnknownMember property to None for some of my dimensions where I'm confident the fact tables will always have a value for it since I have an unknown key built into the dimension table. When I went to process it threw this error for each dimension:
DimensionAttribute [Center].[Center Key]: The 'KeyColumns' #0 has NullProcessing set to 'UnknownMember', but the dimension doesn't have UnknownMember set to 'Visible' or 'Hidden'.
I can't find this NullProcessing property anywhere, hoping someone can point me in the right direction as how to get rid of this error.
Found it nested under the KeyColumns property of the dimension attribute. So I went to the dimension, clicked on Center Key (under either the Dimension Structure or Attribute Relationships tab) and then expanded KeyColumns, expanded again, and found NullProcessing. I changed it from UnknownMember to Error since I'm okay with it erroring if it doesn't find one.