If ever notice the value of user_label change onto a node attribute and automatically updates the display_label for that node? Please note user_label is not defined as Default Label in the CI Type Manager. From a quick Google and HP KB search once can find people stating user_label will do this but cannot find where in the tool it allows this nor where one can prevent it. If an admin goes to the Default Label tab in the CI Type Manager the attribute User Label does not show up as an option to put in the CI Type Label definition.
User_Label will override the display label. The display label is a calculated attribute (as one can see in some classes xml definition and can be configured from CIT Manager Default Label tab) and it can be overridden with the value of "user_label". One should check who updates the user_label attribute.
This was added for BSM/RTSM. SIS topology will update the user label if no previous CI existed.
To avoid user updating this field one can make this invisible user. As an alternative one may want to consider adding another Attribute to the CI Type and use that field to add the values that were added to User_label.
If this happens and user change the User_label one can use an enrichment to blank those items out.