Specifying Primary and Shared Instances of a Member using IsPrimary

In import files, any two members in the same dimension, with the same name, are always treated as separate instances of the same member. If a member has multiple instances in a dimension, the IsPrimary column specifies which instance is primary and which instance(s) are shared. The IsPrimary column is not required; however, we strongly recommend that you use it. If left undefined, it defaults to “True”, which assumes that the member is primary. If left undefined, a warning is displayed in the Import Results file.

Note:

Older import files, that do not use the IsPrimary column, can still be run. However, if the import file does not have the IsPrimary column, it is not possible to create shared members or move members.