The documentation portal is undergoing maintenance. During this period, you can't create any new user credentials. If you do, you'll need to recreate the user credential after the maintenance period ends.
You can configure Informatica Address Verification to include address enrichments such as the Choumei Aza code and the Gaiku code in Japan addresses. Before you enable address enrichments for Japan, install the relevant reference address databases and include the corresponding unlock codes in the