When you register a new SCN account you are required to enter ZIP/Postal Code
The ZIP/Postal code should match the Country and address that you fill in.
Normally you can find all ZIP/Postal Codes here: https://en.wikipedia.org/wiki/List_of_postal_codes
But some countries do not use ZIP/Postal codes.
For example: Bolivia
For such countries, you can complete the registration if you enter any 4 digits in the ZIP/Postal Code field.
i.e. ZIP/Postal Code: “1111”