How to Customize Portal Login Messages

The error messages that get displayed when the user does an unsuccessful login can be customized via editing the problem.properties and problem_en.properties files within the wp.ui.jar file in “/web/IBM/WebSphere/PortalServer/ui/wp.ui/shared/app". You can set the error message of your own choice as per user requirement.

After changing the error messages, don't forgot to restart the portal server.