Is the Trouble Ticket States diagram shown in specification the only one which is allowed or I can add in my implementation some other states and transitions?
Specification presents the defined set of ticket attributes. Does it mean that I cannot use any other attirubutes/information or maybe it means that this is only the "core" set which can be extended according to particular needs? I'm asking in the context of my integration project where I have to obtain (during ticket creation) more data/information (more than it is allowed in specification) from external system to process ticket correctly.