Hi MK,
The Note is issued for guidance, precisely because each ECC system may be set up differently, in terms of countries and regions.
You should adapt the code suggested in the Note to suit your own requirements. If you have Aland as a country, that's perfectly fine - then just code in that way. No need to change that arrangement.
Box 1 code will be 'EU', I suppose, but please refer to your Customs Authority for guidance.
Good luck,
Dave