Hey. Did not find a similar topic about Zip Code.
I noticed that the standart requirement for the zip code field is 5 digits. This is used as a default in USA. This is given also here as an example, and used in some web forms in USA.

WHY? 5 works for USA, but may not work for other countries.
For example in Norway, zip codes are 4 digits, and it is inconvenient to meet an error all the time I fill out norwegian address in USA forms.

this requirement must be suitable for the country one choose from the list.

I find it as a bug. Please comment.