have nothing to do with "tickets" as used by help/complaint/technical support centres - any
first call will lead to creating a "ticket" (a new "case" to deal with) that will be referred to in subsequent calls.
Another related question:
https://www.proz.com/kudoz/english_to_croatian/law_contracts...shows that this Contractor is specialised in network security, so these are "tickets" of the kind that would be created by the help/support team, nothing much to do with "citations/parking or speeding tickets"