Some users are not being challenged on authentications to input their VIP security code or accept a PUSH notification. The user is therefore unable to authenticate.
VIP Enterprise Gateway Radius authentications with "Access-Challenge" enabled
Checking the VIP Manager Transaction Report shows error: "User not found"
User does qualify for the local User Store filter, but is still not present within the VIP Manager "Users" tab.
Steps for troubleshooting:
Help configuring the VIP User Store Filter can be found here: https://knowledge.broadcom.com/external/article?articleId=163791