To enter zip codes for countries other than the United States you need to first add the zip code format in the Code Table Maintenance (KC0004).
This is located under: Financial Information System -> FIS System Administration-> Control File Maintenance -> Maintain Financial Tables -> Code Table Maintenance (KC0004).
**NOTE: The various formats allowed need to be separated by a comma (1A = 1 alpha) (1N = 1 number).
Once the format is set up you can then enter the zip code on the Zip Code Maintenance Screen (KC2000) using that countries code.
This is located under: General System Administration -> General System Parameters -> Zip Code Maintenance (KC2000).