Hi,
I just tried to put the Postal Code for my church in the ZipCode field on a Contact Card Signal and was told it was invalid. I am assuming that there is some sort of error checking in the field that is limiting it to only US based Zip Codes. If this is the case then it would be helpful if the error checking was turned off so that non-US addresses can have their codes as part of a Contact Card.
Peace & Blessings,
Colin+