I need to create Parent/child incidents without creating a problem ticket.

[tcotton]

I have incidents for which I often need to create another incident and reference the original.   I would like to have a parent/child type relationship where the variables from the parent ticket carry over if possible.

[Shane J]

You'd need to create a UI Action instead of using the 'New' button from the Related List.

UI Actions - ServiceNow Wiki

http://wiki.servicenow.com/index.php?title=Using_a_UI_Action_to_Create_a_Record#gsc.tab=0