link dimensions where some keys are missing in one

Hi, I have two dimensions which I want to link. I will give examples to simplify.

Main dimension "Children" has details of seven children, names, ages etc

Second dimension "Cars" has the details of 6 cars owned by 6 of the 7 children and the name of the kid (Joining field)

When I join the dimensions I get the "attrbute key cannot be found" error (because 1 kid doesn't have a car yet).

I have:

set Car unknownmember to Visible

set Car unknownmemberName to No_Car

set Car KeyErrorAction to unknown

set Car KeyNotFound to ReportAndContinue

set Car NullKeyConvertedToUnknown to IgnoreError

set Car NullKeyNotAllowed to ReportAndContinue

Any help is appreciated.

Thanks