The reason for the failed logon is not obvious and requires investigation. This may be issued in response to all of the following variations of ICH408I message (and possibly others):
The issue can be circumvented by switching to the Serena perspective after the initial failure, and logging on to the ZMF instance with the correct password. However, some users may already have re-tried the checkin expecting to be re-prompted for their password. This will have resulted in four failed logon attempts which will often exceed the installation defined maximum.
