Parent-Child error in mdx

Hi,

I am learning HANA. I am getting an mdx error in excel.

Here is my scenario based on some sample data for Airline industry.

Zones contain Regions.

Regions contain Airlines.

Airlines have Routes.

Routes have Flights.Routes belong to Business_Units. Business_Units are parent-child relationship.

Bookings are fact table linked to Flights.

I am  not understanding where it has gone wrong.  I am attaching my screenshots in  a word document saved as xml.

I will appreciate any help in this regards.

Thanks,

--Anitha