If you wish to execute repairs on your own Ducati 998 then it is usually a good idea to have access to a Workshop Manual to use as a guide if you need to know techniques to strip off a certain component for instance the Door and fit it again adequately.
Ducati 998 Workshop Manuals provides specific diagnostic info with regards to your vehicle so if something is playing up it will help you ascertain what the issue is and the way to resolve it. You can then analyse if you can do this on your own or in case the job is too big you are able to make a booking for your 998 in with a trusted garage.
Ducati 998 manual