[otrs] ticketID vs ticket numer

Hi, We're tracking down some bugs in an application we've made which talks to OTRS via SOAP (mainly creates tickets). Anyway, I have one problem or question: We need to create a link in our webbased system that when clicked it will open the OTRS ticket, just like OTRS Notification Master email link, IE. http://some.host.com/otrs/index.pl?Action=AgentTicketZoom;TicketID=5625http://helpdesk.filmtek.no/otrs/index.pl?Action=AgentTicketZoom;TicketID=562... What's the relationsship between TicketID=5625 and ticketnumber #2012060610000044 ? How do we get the correct TicketID number? Thanks! Andy