Set 'Account' and 'Time' attribute types so that they are compatible with the dimension type
This rule analyzes dimensions to determine whether the dimension type is compatible with the attribute types.
You should set the Type property of a dimension to match the Account or Time attribute types that the dimension contains.
Analysis Services uses account and time information to enable specialized behavior. It is not enough to just set the attribute types appropriately. The dimension itself must also be set to the appropriate type.