The use of Auto-Assign can lead to the message "AHD05454: Request NNN Assigned Assignee="" and Group="Group Name" within a Service Desk Manager (SDM) ticket's Activity tab.
Service Desk Manager
All Supported Operating Systems
Strictly speaking, this is an informational message rather than an error.
A new NX.ENV variable, NX_AUTOASG_GROUP_ONLY, controls how the auto-assign functionality works.
When set to 1, this causes auto-assign to assign tickets to groups rather than individual analysts.
To revert the behavior back so that tickets are assigned to individual analysts, edit the NX_ROOT\NX.env file and change NX_AUTOASG_GROUP_ONLY from 1 to 0, then recycle the SDM services for the change to take effect.